/*
Copyright (C) 2003-2004 WTWG Uni Bern, MPIWG Berlin
 
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
 
Author: 
  Christian Luginbuehl, 07.04.2004 , Version Alcatraz 0.6
  Robert Casties 28.10.2004

!! requires baselib.js !!

*/

function identify() {
  return 'Digicat v0.4';
}

var cells = null;


function dc_init() {

  // put the query parameters (sans "?") in the parameters array
  parseParameters(location.search.slice(1));
}

function display(detail) {
    // redisplay the page
    if (! detail) {
	detail = 9;
    }
    var queryString = getAllParameters(detail);
    location.href = location.protocol + "//" + location.host + location.pathname + "?" + queryString;
}

function dc_render(doc) {
	
  var fWidth  = document.body ? document.body.clientWidth : innerWidth;
  var fHeight = document.body ? document.body.clientHeight : innerHeight;

  var mx = getParameter("mx");
  cells = mx.split('x');
  
  var dw = getParameter("dw");
  var dh = getParameter("dh");
  var pt = getParameter("pt");
  var pn = getParameter("pn");

  var picWidth = (dw != 0) ? dw : Math.floor((fWidth-30)/cells[0])-2*cells[0]-1;
  var picHeight = (dh != 0) ? dh : picWidth;

  if (cells.length > 1) {
    picHeight = (dh != 0) ? dh : Math.floor(((fHeight-30)-12*cells[1])/cells[1])-2*cells[1]-1;
  } else {
    cells[1] = Math.ceil(pt/cells[0]);
  }

  var cellWidth  = parseInt(picWidth)+8;
  var cellHeight = parseInt(picHeight)+18;

  doc.writeln('<table width="100%" height="100%" border="0" cellspacing="1" cellpadding="0">');

  for (var j = 0; j < cells[1]; j++) {
      doc.writeln('<tr>');
      for (var i = 0; i < cells[0]; i++) {
	  var idx  = parseInt(pn)+i+j*cells[0];
	  var img  = baseUrl + "/servlet/Scaler?fn=" + getParameter("fn") + "&pn=" + idx;
	  img += "&dw=" + picWidth + "&dh=" + picHeight + "&mo=" + getParameter("mo");
	  doc.write('<td width="'+cellWidth+'" height="'+cellHeight+'">');
	  if (idx <= pt) {
	      doc.write('<a href="'+dl_link(idx)+'" target="_blank"><img src="'+img+'" border="0"></a><div class="number">'+idx+'</div>');
	  } else {
	      doc.write('<div class="nonumber">'+idx+'</div>');
	  }
	  doc.writeln('</td>');
      }
      doc.writeln(' </tr>');
  }
  doc.writeln('</table>');
}


function dl_link(i) {
    var link = baseUrl+"/digilib.jsp?fn="+getParameter("fn")+"&pn="+i+"&mo="+getParameter("mo");
    return link;
}  


function Backpage() {
    var pn = parseInt(getParameter("pn"));
    if (pn <= 1) {
	pn = 1;
        alert("You are already on the first page!");
    }

    pn = pn - parseInt(cells[0]*cells[1]);

    if (pn < 1) {
    	pn = 1;
    }
    setParameter("pn", pn);
    display();
}

function Nextpage() {
    var pn = parseInt(getParameter("pn"));
    pn = pn + parseInt(cells[0]*cells[1]);
    setParameter("pn", pn);
    display();
}