[OpenLayers-Users] TileCache problem in IE6/7 when using Map.setCenter

[zsuRuby]

hi:
everyone,I got a problem when using Map.setCenter to changing my map's
center;

i extend Map.js as follows:


/**
 * @class CNavMap 
 * a class to create  base map for developing.
 * 
 * @extends OpenLayers.Map
 * @param{
 * 		div - container for map images.
 * 		option - additional configuration for map.
 * }
 * 
 * case:
 * var option = {
 * 	
 * }
 * var style=new CNavMap($('mapdiv'),option);
 * 
 * @see OpenLayers.Map.js
 */
CNavMap = OpenLayers.Class(OpenLayers.Map,{		    
	/**
	 * @Description 
	 * @See OpenLayers.Layer.Vector
	 */
	dynamicVectorLayer:null,
	/**
	 * @Description 
	 * @See OpenLayers.Layer.Vector
	 */
	staticVectorLayer:null,
	/**
	 * 
	 */
	dynamicMarkerLayer:null,
	
	/**
	 * 
	 */
	staticMarkerLayer:null,
	
	
	initialize: function (div, options){
		var option=options;
		if(!option)
			option={};
		OpenLayers.Util.extend(option,{
				controls:[ 
						  new OpenLayers.Control.Navigation(),
                          new OpenLayers.Control.ArgParser(),
                          new OpenLayers.Control.Attribution()
	                	]
        	}              
        );
		OpenLayers.Map.prototype.initialize.apply(this ,[div,option]);									
		this.projection=new OpenLayers.Projection("EPSG:900913");
		this.displayProjection=new OpenLayers.Projection("EPSG:4326");       
		this.units="m";			        
						
		this.numZoomLevels=15;
		this.maxResolution=19567.8792375;					
		this.maxExtent=new OpenLayers.Bounds(-20037508,
-20037508,20037508*2,20037508);
								
		this.restrictedExtent=new OpenLayers.Bounds(-20037508,
-20037508,20037508*2,13358338.667);
		this.addLayer(new
CNavTileCache("baseMap",TILE_PIV_URL,{isBaseLayer:true}));		                            
		this.div.oncontextmenu = function () { return false;};
		if(CENTER_LONLAT){
			this.zoomToLonLat(new
OpenLayers.LonLat(CENTER_LONLAT[0],CENTER_LONLAT[1]),DEFAULT_ZOOM);
		}
		this._initLayer();
	},
	_initLayer:function(){
		var layer=[
			this.dynamicVectorLayer=new OpenLayers.Layer.Vector("featureLayer"),
			this.dynamicMarkerLayer=new CNavDynamicMarkerLayer("dynamicMarkerLayer"),
			this.staticMarkerLayer=new OpenLayers.Layer.Markers("staticMarkerLayer")
		]
		this.addLayers(layer);
	},
	///////////////////////////////////////////////////////////////////////////
	///////////////////////////////////////////////////////////////////////////	
		
	/**
	 * method:zoomToLonLat
	 * 
	 * @param {
	 * 		lonlat - {LonLat} 
	 * 		zoom - {int} 
	 * }
	 * @return 
	 */
	zoomToLonLat: function(lonlat,zoom){
		var p=CNavUtil._toMerc(lonlat);//"EPSG:4326"->"EPSG:900913"	    	     
		this.setCenter(p,zoom,false,true);
	},
	CLASS_NAME:"CNavMap"
});

CNavTileCache class is a class extends OpenLayers.Layer.TileCache.js

every works fine when CNavMap initialize;it show tiles correctly;

but when i click:
<\a href="javascript:;" onclick="zoomToLonLat();">zoomToLonLat</\a>

function zoomToLonLat(){
    map.zoomToLonLat(new LonLat(113.2663,23.1489),8);
}


magic  happens:

it works in firefox but IE6/7 ;it seems IE8 works too;

In Ie6/7 :
tiles are not show on map; 
when i use fillder2 to see the requests ,it seems the requests response 200
Ok;
when i check the DOM the tiles seem had add to the container with 
displsy:none;
and the Previous Tiles also in the container too.

does anybody can see wha's happening?
-- 
View this message in context: http://n2.nabble.com/TileCache-problem-in-IE6-7-when-using-Map-setCenter-tp4098569p4098569.html
Sent from the OpenLayers Users mailing list archive at Nabble.com.