--- ECHO_content/ECHO_helpers.py	2004/12/02 20:11:49	1.31
+++ ECHO_content/ECHO_helpers.py	2004/12/10 19:33:09	1.32
@@ -221,11 +221,12 @@ class ECHO_basis:
 	"""generate img-tag for map"""
 	bt = BrowserCheck(self)
 	tag = ""
-	#src = self.REQUEST['URL1'] + "/overview"
 	src = self.getOverview().absolute_url()
 	if bt.isN4:
+	    # N4 needs ilayer to create an id
 	    tag += '<ilayer id="overview" visibility="show"><img src="%s"></ilayer>'%src
 	else:
+	    # img with id
 	    tag += '<img id="overview" src="%s" />'%src
 	return tag
         
@@ -242,14 +243,17 @@ class ECHO_basis:
 	    text = ob.getLabel()
 	if text is None:
 	    text = "link"
+	tiptext = ob.getText()
 	tag = ""
 	if bt.isN4:
+	    # N4 needs layer for highlighting
 	    tag += '<ilayer id="a.%s"><a onmouseover="highlightPair(\'%s\', true)" onmouseout="highlightPair(\'%s\', false)" href="%s" target="_blank"'%(id,id,id,link)
 	    tag += ">" + text + "</a></ilayer>"
 	else:
+	    # a-element
 	    tag = '<a id="a.%s" onmouseover="highlightPair(\'%s\', true)" onmouseout="highlightPair(\'%s\', false)" href="%s" target="_blank"'%(id,id,id,link)
-	    if ob.text:
-		tag += ' title="%s"'%ob.text
+	    if tiptext:
+		tag += ' title="%s"'%tiptext
 	    tag += ">" + text + "</a>"
 	return tag
 
@@ -262,6 +266,7 @@ class ECHO_basis:
 	tag = ""
 
 	if bt.isN4:
+	    # N4 needs layer and img elements
 	    tag += '<layer id="i.%s" onmouseover="highlightPair(\'%s\', true)" onmouseout="highlightPair(\'%s\', false)">'%(id,id,id)
 	    if ob.isTypeArrow():
 	        rot = ob.angle
@@ -273,21 +278,29 @@ class ECHO_basis:
 		tag += ' /></a>'
 	    tag += '</layer>'
 	else:
+	    # create a-element
 	    tag = '<a id="b.%s" onmouseover="highlightPair(\'%s\', true)" onmouseout="highlightPair(\'%s\', false)" href="%s" target="_blank">'%(id,id,id,link)
 	    if ob.isTypeArrow():
 		rot = ob.angle
 		if bt.isIEWin and bt.versIE > 5:
+		    # IE/Win 5.5 has "feature" for PNG transparency
 		    tag += '<span id="i.%s" style="position:absolute; top:-100px; left:-100px; border-style:none; border-width=1px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=\'%s&rot=%s\');"><img style="visibility:hidden" src="%s&rot=%s" /></span>'%(id,arrowsrc,rot,arrowsrc,rot)
 		else:
+		    # arrow image
 		    tag += '<img id="i.%s" src="%s&rot=%s" border="1" style="position:absolute; top:-100px; left:-100px; border-style:none;" />'%(id,arrowsrc,rot)
 	    else:
-		if bt.isIEWin:
-		    tag += '<div id="i.%s" style="position:absolute; top:-100px; left:-100px;background:url(area_img)"'%(id)
+		if bt.isIE:
+		    # IE needs transparent img for area
+		    tag += '<img id="i.%s" border="0" style="position:absolute; top:-100px; left:-100px;" src="trans_img"'%(id)
+		    if tiptext:
+			tag += ' title="%s"'%tiptext
+		    tag += " />"
 		else:
+		    # div for area
 		    tag += '<div id="i.%s" style="position:absolute; top:-100px; left:-100px;"'%(id)
-		if tiptext:
-		    tag += ' title="%s"'%tiptext
-		tag += '> </div>'
+		    if tiptext:
+			tag += ' title="%s"'%tiptext
+		    tag += '> </div>'
 	    tag += '</a>'
 	return tag