OpenLayers.GreaseOl.GreaseMap=OpenLayers.Class(OpenLayers.Map,{idGreaseMap:null,urlBlankImage:null,prevZoomLevel:null,layersVisibilityChanged:false,getLayersVisibilityChanged:function(){return this.layersVisibilityChanged;},setLayersVisibilityChanged:function(layersVisibilityChanged){this.layersVisibilityChanged=layersVisibilityChanged;},getPrevZoomLevel:function(){return this.prevZoomLevel;},setPrevZoomLevel:function(prevZoomLevel){this.prevZoomLevel=prevZoomLevel;},getUrlBlankImage:function(){return this.urlBlankImage;},setUrlBlankImage:function(urlBlankImage){this.urlBlankImage=urlBlankImage;},getIdGreaseMap:function(){return this.idGreaseMap;},setIdGreaseMap:function(idGreaseMap){this.idGreaseMap=idGreaseMap;},initialize:function(div,options,idGreaseMap,urlBlankImage){this.idGreaseMap=idGreaseMap;this.urlBlankImage=urlBlankImage;OpenLayers.Map.prototype.initialize.apply(this,[div,options]);},CLASS_NAME:"OpenLayers.GreaseOl.GreaseMap"});