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1 /* navigation_ie -- JS library for digilib (Mozilla version)
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2
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3 Digital Image Library servlet components
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4
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5 Copyright (C) 2001, 2002 Christian Luginbuehl (luginbuehl@student.unibe.ch)
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6
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7 This program is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2 of the License, or (at your
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10 option) any later version.
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11
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12 Please read license.txt for the full details. A copy of the GPL
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13 may be found at http://www.gnu.org/copyleft/lgpl.html
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14
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15 You should have received a copy of the GNU General Public License
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16 along with this program; if not, write to the Free Software
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 */
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20
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21 // these two global variables have to be initialised before the frist use of the functions below
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22 // to fill in the attributes you can use the function initPicture provided below
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23 // - array with all attributes
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24 var att = new Array();
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25
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26 // - variable to store the path to the frame, in which the pictures should be created
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27 var whichFrame = parent.mainFrame;
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28
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29 // give a name to the window containing digilib - this way one can test if there is already a
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30 // digilib-window open and replace the contents of it (ex. digicat)
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31 window.name = "digilib";
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32
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33 // function that launches the ScaleServlet
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34 // the different detailGrades:
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35 // 0 -> back, next, page
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36 // 1 -> zoomout
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37 // 2 -> zoomarea, zoompoint, moveto, scaledef
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38
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39 function loadPicture(detailGrade, keepArea) {
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40
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41 // alert("wx: " + att[5] + "\tww: " + att[7] + "\nwy: " + att[6] + "\twh: " + att[8]);
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42
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43 // sorry about that, but Mozilla needs to have a document body to calc the frames width and height
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44 whichFrame.document.open();
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45 whichFrame.document.write('<html><head></head><body bgcolor="#666666" topmargin="10" leftmargin="10" marginwidth="10" magrinheight="10">');
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46
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47 // alert(whichFrame.innerWidth);
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48
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49 var newPicture = "http://" + location.host + "/docuserver/digitallibrary/servlet/Scaler/"
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50 newPicture += att[0] + "?" + "pn=" + att[1] + "&ws=" + att[2];
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51 newPicture += "&dw=" + (whichFrame.innerWidth-30) + "&dh=" + (whichFrame.innerHeight-30);
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52 newPicture += "&mo=" + att[3];
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53
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54 if (detailGrade == 0) {
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55 att[4] = "0/0";
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56 }
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57
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58 if ((detailGrade == 1) || (detailGrade == 0 && !keepArea)) {
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59 att[5] = 0;
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60 att[6] = 0;
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61 att[7] = 1;
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62 att[8] = 1;
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63 }
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64 newPicture += "&wx=" + att[5] + "&wy=" + att[6] + "&ww=" + att[7] + "&wh=" + att[8];
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65
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66 whichFrame.document.write('<div ID="lay1" style="position:absolute; left:10; top:10; visibility:visible"><img name="pic" src="' + newPicture + '"></div>');
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67 whichFrame.document.write('<div ID="dot0" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark1.gif"></div>');
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68 whichFrame.document.write('<div ID="dot1" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark2.gif"></div>');
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69 whichFrame.document.write('<div ID="dot2" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark3.gif"></div>');
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70 whichFrame.document.write('<div ID="dot3" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark4.gif"></div>');
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71 whichFrame.document.write('<div ID="dot4" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark5.gif"></div>');
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72 whichFrame.document.write('<div ID="dot5" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark6.gif"></div>');
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73 whichFrame.document.write('<div ID="dot6" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark7.gif"></div>');
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74 whichFrame.document.write('<div ID="dot7" style="position:absolute; left:-20; top:100; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/mark8.gif"></div>');
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75 whichFrame.document.write('<div ID="eck1" style="position:absolute; left:-20; top:120; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/olinks.gif"></div>');
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76 whichFrame.document.write('<div ID="eck2" style="position:absolute; left:-20; top:140; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/orechts.gif"></div>');
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77 whichFrame.document.write('<div ID="eck3" style="position:absolute; left:-20; top:160; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/ulinks.gif"></div>');
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78 whichFrame.document.write('<div ID="eck4" style="position:absolute; left:-20; top:180; visibility:hidden"><img src="http://' + location.host + '/docuserver/digitallibrary/urechts.gif"></div>');
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79
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80 whichFrame.document.write('</body></html>');
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81
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82 whichFrame.document.close();
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83
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84 initScripts();
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85
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86 pageInfo();
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87
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88 setmark();
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89 }
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90
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91
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92 function Backpage(keepArea) {
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93
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94 att[1] = parseInt(att[1]) - 1;
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95
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96 if (att[1] > 0) {
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97 loadPicture(0, keepArea);
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98 } else {
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99 att[1] = parseInt(att[1]) + 1;
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100 alert("You are already on the first page!");
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101 }
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102 }
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103
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104
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105 function Nextpage(keepArea) {
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106
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107 att[1] = parseInt(att[1]) + 1;
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108
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109 if (att[1] <= parent.numPages) {
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110 loadPicture(0, keepArea);
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111 } else {
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112 att[1] = parseInt(att[1]) - 1;
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113 alert("You are already on the last page!");
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114 }
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115 }
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116
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117
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118 function Page(keepArea) {
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119
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120 do {
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121 page = prompt("Goto Page (1 - " + parent.numPages + "):", 1);
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122 } while ((page != null) && ((page < 1) || (page > parent.numPages)));
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123
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124 if (page != null && page != att[1]) {
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125 att[1] = page;
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126 loadPicture(0, keepArea);
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127 }
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128 }
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129
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130
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131 function Digicat() {
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132 var url = "http://" + location.host + "/docuserver/digitallibrary/digicat.html?" + att[0] + "+" + att[1];
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133 win = window.open(url, "digicat");
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134 win.focus();
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135 }
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136
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137
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138 function Ref(refselect) {
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139
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140 var hyperlinkRef = "http://" + location.host + "/docuserver/digitallibrary/digilib.jsp?";
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141 hyperlinkRef += att[0] + "+" + att[1] + "+" + att[2] + "+" + att[3] + "+" + att[4];
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142
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143 if ((att[5] != 0) || (att[6] != 0) || (att[7] != 1) || (att[8] != 1)) {
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144 hyperlinkRef += "+" + att[5] + "+" + att[6] + "+" + att[7] + "+" + att[8];
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145 }
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146
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147 if (refselect == 1) {
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148 prompt("Link for HTML--documents", hyperlinkRef);
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149 } else {
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150 prompt("Link for LaTeX--documents", "\\href{" + hyperlinkRef + "}{TEXT}");
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151 }
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152 }
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153
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154
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155 function Mark() {
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156
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157 if (att[4].split(";").length > 7) {
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158 alert("Only 8 marks are possible at the moment!");
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159 return;
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160 }
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161
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162 function MarkEvent(event) {
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163
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164 if ((att[4] != "") && (att[4] != "0/0")) {
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165 att[4] += ";";
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166 } else {
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167 att[4] = "";
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168 }
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169
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170 var markX = cropFloat(att[5]+att[7]*(event.pageX-parseInt(whichFrame.document.getElementById("lay1").style.left))/whichFrame.document.pic.offsetWidth);
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171 var markY = cropFloat(att[6]+att[8]*(event.pageY-parseInt(whichFrame.document.getElementById("lay1").style.top))/whichFrame.document.pic.offsetHeight);
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172
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173 att[4] += markX + "/" + markY;
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174
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175 whichFrame.document.getElementById("lay1").removeEventListener("mousedown", MarkEvent, true);
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176 setmark();
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177 }
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178
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179 whichFrame.document.getElementById("lay1").addEventListener("mousedown", MarkEvent, true);
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180 }
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181
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182
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183 function Zoomrect() {
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184 var state = 0;
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185 var x1, y1, x2, y2;
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186
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187 function Click(event) {
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188
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189 if (state == 0) {
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190 state = 1;
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191
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192 x1 = event.pageX;
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193 y1 = event.pageY;
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194 x2 = x1;
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195 y2 = y1;
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196
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197 whichFrame.document.getElementById("eck1").style.left = x1;
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198 whichFrame.document.getElementById("eck1").style.top = y1;
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199 whichFrame.document.getElementById("eck2").style.left = x2-12;
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200 whichFrame.document.getElementById("eck2").style.top = y1;
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201 whichFrame.document.getElementById("eck3").style.left = x1;
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202 whichFrame.document.getElementById("eck3").style.top = y2-12;
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203 whichFrame.document.getElementById("eck4").style.left = x2-12;
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204 whichFrame.document.getElementById("eck4").style.top = y2-12;
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205
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206 whichFrame.document.getElementById("eck1").style.visibility="visible";
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207 whichFrame.document.getElementById("eck2").style.visibility="visible";
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208 whichFrame.document.getElementById("eck3").style.visibility="visible";
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209 whichFrame.document.getElementById("eck4").style.visibility="visible";
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210
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211 whichFrame.document.getElementById("lay1").addEventListener("mousemove", Move, true);
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212 whichFrame.document.getElementById("eck4").addEventListener("mousemove", Move, true);
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213
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214 } else {
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215
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216 x1 -= parseInt(whichFrame.document.getElementById("lay1").style.left);
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217 y1 -= parseInt(whichFrame.document.getElementById("lay1").style.top);
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218
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219 x2 = event.pageX-parseInt(whichFrame.document.getElementById("lay1").style.left);
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220 y2 = event.pageY-parseInt(whichFrame.document.getElementById("lay1").style.top);
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221
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222 whichFrame.document.getElementById("lay1").removeEventListener("mousedown", Click, true);
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223 whichFrame.document.getElementById("eck4").removeEventListener("mousedown", Click, true);
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224
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225 whichFrame.document.getElementById("lay1").removeEventListener("mousemove", Move, true);
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226 whichFrame.document.getElementById("eck4").removeEventListener("mousemove", Move, true);
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227
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228 whichFrame.document.getElementById("eck1").style.visibility="hidden";
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229 whichFrame.document.getElementById("eck2").style.visibility="hidden";
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230 whichFrame.document.getElementById("eck3").style.visibility="hidden";
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231 whichFrame.document.getElementById("eck4").style.visibility="hidden";
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232
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233 att[5] = cropFloat(att[5]+att[7]*((x1 < x2) ? x1 : x2)/whichFrame.document.pic.offsetWidth);
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234 att[6] = cropFloat(att[6]+att[8]*((y1 < y2) ? y1 : y2)/whichFrame.document.pic.offsetHeight);
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235
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236 att[7] = cropFloat(att[7]*Math.abs(x1-x2)/whichFrame.document.pic.offsetWidth);
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237 att[8] = cropFloat(att[8]*Math.abs(y1-y2)/whichFrame.document.pic.offsetHeight);
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238
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239 if (att[7] != 0 && att[8] != 0) {
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240 loadPicture(2);
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241 }
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242 }
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243 }
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244
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245 function Move(event) {
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246
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247 x2 = event.pageX;
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248 y2 = event.pageY;
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249
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250 whichFrame.document.getElementById("eck1").style.left = ((x1 < x2) ? x1 : x2);
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251 whichFrame.document.getElementById("eck1").style.top = ((y1 < y2) ? y1 : y2);
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252 whichFrame.document.getElementById("eck2").style.left = ((x1 < x2) ? x2 : x1)-12;
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253 whichFrame.document.getElementById("eck2").style.top = ((y1 < y2) ? y1 : y2);
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254 whichFrame.document.getElementById("eck3").style.left = ((x1 < x2) ? x1 : x2);
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255 whichFrame.document.getElementById("eck3").style.top = ((y1 < y2) ? y2 : y1)-12;
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256 whichFrame.document.getElementById("eck4").style.left = ((x1 < x2) ? x2 : x1)-12;
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257 whichFrame.document.getElementById("eck4").style.top = ((y1 < y2) ? y2 : y1)-12;
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258 }
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259
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260 whichFrame.document.getElementById("lay1").addEventListener("mousedown", Click, true);
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261 whichFrame.document.getElementById("eck4").addEventListener("mousedown", Click, true);
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262 }
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263
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264
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265 function Zoomin() {
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266
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267 function ZoominEvent(event) {
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268
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269 att[5] = cropFloat(att[5]+att[7]*(event.pageX-parseInt(whichFrame.document.getElementById("lay1").style.left))/whichFrame.document.pic.offsetWidth-0.5*att[7]*0.7);
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270 att[6] = cropFloat(att[6]+att[8]*(event.pageY-parseInt(whichFrame.document.getElementById("lay1").style.top))/whichFrame.document.pic.offsetHeight-0.5*att[8]*0.7);
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271
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272 att[7] = cropFloat(att[7]*0.7);
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273 att[8] = cropFloat(att[8]*0.7);
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274
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275 if (att[5] < 0) {
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276 att[5] = 0;
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277 }
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278 if (att[6] < 0) {
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279 att[6] = 0;
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280 }
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281 if (att[5]+att[7] > 1) {
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282 att[5] = 1-att[7];
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283 }
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284 if (att[6]+att[8] > 1) {
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285 att[6] = 1-att[8];
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286 }
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287
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288 whichFrame.document.getElementById("lay1").removeEventListener("mousedown", ZoominEvent, true);
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289
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290 loadPicture(2);
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291 }
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292
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293 whichFrame.document.getElementById("lay1").addEventListener("mousedown", ZoominEvent, true);
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294 }
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295
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296
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297 function Zoomout() {
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298
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299 loadPicture(1);
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300 }
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301
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302
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303 function Moveto() {
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304
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305 function MovetoEvent(event) {
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306
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307 att[5] = cropFloat(att[5]+att[7]*(event.pageX-parseInt(whichFrame.document.getElementById("lay1").style.left))/whichFrame.document.pic.offsetWidth-0.5*att[7]);
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308 att[6] = cropFloat(att[6]+att[8]*(event.pageY-parseInt(whichFrame.document.getElementById("lay1").style.top))/whichFrame.document.pic.offsetHeight-0.5*att[8]);
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309
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310 if (att[5] < 0) {
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311 att[5] = 0;
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312 }
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313 if (att[6] < 0) {
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314 att[6] = 0;
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315 }
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316 if (att[5]+att[7] > 1) {
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317 att[5] = 1-att[7];
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318 }
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319 if (att[6]+att[8] > 1) {
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320 att[6] = 1-att[8];
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321 }
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322
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323 whichFrame.document.getElementById("lay1").removeEventListener("mousedown", MovetoEvent, true);
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324
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325 loadPicture(2);
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326 }
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327
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328 whichFrame.document.getElementById("lay1").addEventListener("mousedown", MovetoEvent, true);
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329 }
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330
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331
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332 function Scaledef(scaledef) {
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333
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334 att[2] = scaledef;
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335 loadPicture(2);
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336 }
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337
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338
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339 function setmark() {
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340
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341 if (att[4] != "" && att[4] != "0/0") {
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342 var mark = att[4].split(";");
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343
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344 var countMarks = mark.length;
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345
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346 // maximum of marks is 8
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347 // we do not report this error because this is already done in func. "Mark"
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348 if (countMarks > 8) countMarks = 8;
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349
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350 var picWidth = whichFrame.document.pic.offsetWidth;
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351 var picHeight = whichFrame.document.pic.offsetHeight;
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352
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353 // catch the cases where the picture had not been loaded already and
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354 // make a timeout so that the coordinates are calculated with the real dimensions
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355 if (whichFrame.document.pic.complete) {
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356 var xoffset = parseInt(whichFrame.document.getElementById("lay1").style.left);
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357 var yoffset = parseInt(whichFrame.document.getElementById("lay1").style.top);
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358
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359 for (var i = 0; i < countMarks; i++) {
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360 mark[i] = mark[i].split("/");
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361
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362 if ((mark[i][0] > att[5]) && (mark[i][1] > att[6]) && (mark[i][0] < (att[5]+att[7])) && (mark[i][1] < (att[6]+att[8]))) {
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363
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364 mark[i][0] = parseInt(xoffset+picWidth*(mark[i][0]-att[5])/att[7]);
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365 mark[i][1] = parseInt(yoffset+picHeight*(mark[i][1]-att[6])/att[8]);
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366
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367
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368 whichFrame.document.getElementById("dot" + i).style.left = mark[i][0]-5;
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369 whichFrame.document.getElementById("dot" + i).style.top = mark[i][1]-5;
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370 whichFrame.document.getElementById("dot" + i).style.visibility = "visible";
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371 }
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372 }
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373 } else {
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374 setTimeout("setmark()", 100);
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375 }
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376 }
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377 }
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378
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379 // capturing keypresses for next and previous page
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380 // ascii-values of n = 110, b = 98
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381 function parseKeypress (event) {
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382 if (event.charCode == 110) {
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383 Nextpage();
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384 }
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385 if (event.charCode == 98) {
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386 Backpage();
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387 }
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388 }
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389
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390
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391 // auxiliary function to crop senseless precicsion
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392 function cropFloat(tmp) {
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393 return parseInt(10000*tmp)/10000;
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394 }
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395
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396
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397 // initialize browser specific things (keypress caputring)
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398 function initScripts() {
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399 // for (var f = 0; f < window.frames.length; f++) {
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400 // window.frames[f].document.addEventListener('keypress', parseKeypress, true);
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401 // }
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402 whichFrame.document.addEventListener('keypress', parseKeypress, true);
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403 whichFrame.focus();
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404 }
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405
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406
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407 // fill in the values of the "att"-array
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408 function initPicture(picURL) {
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409 att = picURL.split("+");
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410
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411 if (att[0].lastIndexOf("/") == att[0].length-1) {
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412 att[0] = att[0].substring(0, att[0].length-1);
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413 }
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414
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415 if (att.length < 2 || att[1] == "") {
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416 att[1] = 1;
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417 }
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418 if (att.length < 3 || att[2] == "") {
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419 att[2] = "1.0";
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420 }
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421
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422 if (att.length < 4) {
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423 att[3] = "";
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424 }
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425
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426 if (att[3].indexOf("f") > -1) {
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427 att[3] = "fit";
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428 }
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429
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430 if (att.length < 5 || att[4] == "") {
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431 att[4] = "0/0";
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432 }
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433
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434 // converts the old mark format (0-1000) to new format(0.0 - 1.0)
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435 if (att[4] != "0/0") {
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436 var tmp = att[4].split(";");
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437
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438 att[4] = "";
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439
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440 for (i = 0; i < tmp.length; i++) {
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441 tmp[i] = tmp[i].split("/");
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442
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443 if (tmp[i][0] > 1 && tmp[i][1] > 1) {
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444 tmp[i][0] /= 1000;
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445 tmp[i][1] /= 1000;
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|
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446 }
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447
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|
448 att[4] += tmp[i][0] + "/" + tmp[i][1] + ";";
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449 }
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|
450 att[4] = att[4].slice(0, -1);
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451 }
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452
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|
453 if (att.length < 7) {
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454 att[5] = 0;
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|
455 att[6] = 0;
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456 att[7] = 1;
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457 att[8] = 1;
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458 } else {
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459 att[5] = parseFloat(att[5]);
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460 att[6] = parseFloat(att[6]);
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461 att[7] = parseFloat(att[7]);
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462 att[8] = parseFloat(att[8]);
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|
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463 }
|
|
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464 }
|
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465
|
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466
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467 function pageInfo() {
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468
|
|
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469 // bug in netscape 4.xx (confunding px and pt)
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470 var fontsize = document.layers ? "11pt" : "11px";
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471
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472 if (window.pageFrame) {
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473 pageFrame.document.open();
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|
474 pageFrame.document.write('<html><head></head><body bgcolor="#CCCCCC" topmargin="5" marginheight="5">');
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475 pageFrame.document.write('<p style="font-family: Verdana, Arial, Helvetica, sans-serif; text-align: center; color: #CC3333; font-size: ' + fontsize + '">');
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476 pageFrame.document.write(att[1] + '<b> of </b>' + numPages + '</p></body></html>');
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|
|
477 pageFrame.document.close();
|
|
|
478 }
|
|
|
479 }
|
