From Bart's email to the list:
the following use case with 2.2RC2:
* open up an OpenLayers application with a few untiled WMS layers (1
base layer, a few overlays) in Firefox
* open up a new tab in Firefox
will cause a displacement between the baselayer and the overlays.
Situation before adding a tab (screendump):
http://osgis.nl/download/openlayers_firefox_no_tab.png
Situation after adding a tab (screendump):
http://osgis.nl/download/openlayers_firefox_add_a_tab.png
Example HTML code to reproduce:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<HEAD><!-- javascript include OpenLayers.js -->
<script language="JavaScript"
src="http://localhost/chameleon//common/openlayers/OpenLayers.js"
type="text/javascript"></script>
<SCRIPT Language="JavaScript" type="text/javascript">
var map;
function mapinit(){
map = new OpenLayers.Map( $('map'), { 'projection':
'EPSG:4326', 'units':'degrees', 'maxExtent': new OpenLayers.Bounds(-180,
-90, 180, 90) , 'maxResolution':'auto'}); var layer = new
OpenLayers.Layer.WMS.Untiled( "WorldGen",
"http://www2.dmsolutions.ca/cgi-bin/mswms_world?",
{layers: 'WorldGen', 'format':'image/png', 'transparent':'true'},
{'ratio':1, isBaseLayer: true} );
map.addLayers([layer]); var layer = new
OpenLayers.Layer.WMS.Untiled( "World Political",
"http://www2.dmsolutions.ca/cgi-bin/mswms_world?",
{layers: 'WorldPolitical', 'format':'image/png', 'transparent':'true'},
{'ratio':1, isBaseLayer: false} );
map.addLayers([layer]); var layer = new
OpenLayers.Layer.WMS.Untiled( "WorldGen_Outline",
"http://www2.dmsolutions.ca/cgi-bin/mswms_world?",
{layers: 'WorldGen_Outline', 'format':'image/png',
'transparent':'true'}, {'ratio':1, isBaseLayer: false} );
map.addLayers([layer]); var layer = new
OpenLayers.Layer.WMS.Untiled( "WorldRoads",
"http://www2.dmsolutions.ca/cgi-bin/mswms_world?",
{layers: 'WorldRoads', 'format':'image/png', 'transparent':'true'},
{'ratio':1, isBaseLayer: false} );
map.addLayers([layer]); var layer = new
OpenLayers.Layer.WMS.Untiled( "WorldPlaces",
"http://www2.dmsolutions.ca/cgi-bin/mswms_world?",
{layers: 'WorldPlaces', 'format':'image/png', 'transparent':'true'},
{'ratio':1, isBaseLayer: false} );
map.addLayers([layer]); var layer = new
OpenLayers.Layer.WMS.Untiled( "WorldPOI",
"http://www2.dmsolutions.ca/cgi-bin/mswms_world?",
{layers: 'WorldPOI', 'format':'image/png', 'transparent':'true'},
{'ratio':1, isBaseLayer: false} );
map.addLayers([layer]); map.addControl(new
OpenLayers.Control.LayerSwitcher());
//map.addControl(new OpenLayers.Control.OverviewMap());
map.zoomToMaxExtent();
}
function CWC2OnLoadFunction()
{
mapinit();
}
</SCRIPT>
<title>Chameleon Sample - OGC Widgets</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<body onload="CWC2OnLoadFunction();">
<form>
<div id="map"></div>
</form>
</body>
</html>
OpenLayers
