function G_NORMALMapTypeControl(gmap){
	this.map = gmap;
}
G_NORMALMapTypeControl.prototype = new GMapTypeControl();
G_NORMALMapTypeControl.prototype.initialize = function (){
		var container = document.createElement("div");
		container.id = "G_NORAMALMapTypeControl";
		
		
		var imgBtn = document.createElement("img");
		imgBtn.src="images/index/gzmap_S.gif";
		imgBtn.id = "G_NORAMAL"
		imgBtn.title = "地图";
		imgBtn.className="mouseOnStyle";
		GEvent.addDomListener(container, 'click', this.setNORMALGType);
		container.appendChild(imgBtn);
		this.map.getContainer().appendChild(container);
		return container;
} 

G_NORMALMapTypeControl.prototype.getDefaultPosition = function() {
	return new GControlPosition(G_ANCHOR_TOP_RIGHT, new GSize(95,7));
}

G_NORMALMapTypeControl.prototype.setNORMALGType = function(){
	//判断是否已经处于选择状态，是则返回
	if(MapTypeStatus=="G_NORMALMapType"){
		return;
	}
	MapTypeStatus="G_NORMALMapType";
	var agsLayer = new GTileLayer(copyRight, 8, 18);
	agsLayer.getTileUrl = function(tile, zoom) {
		return tileURL+'/Layers/_alllayers/L'
				+ ('00' + (zoom).toString(10)).substring(('00' + (zoom)
						.toString(10)).length - 2)
				+ '/R'
				+ ('00000000' + tile.y.toString(16))
						.substring(('00000000' + tile.y.toString(16)).length - 8)
				+ '/C'
				+ ('00000000' + tile.x.toString(16))
						.substring(('00000000' + tile.x.toString(16)).length - 8)
				+ '.png'
	}

	var gzMapType = new GMapType( [ agsLayer ], G_NORMAL_MAP.getProjection(),
			"广州地图");
	gmap.setMapType(gzMapType);
	if(ov){
	ov.setMapType(gzMapType);
	}
	var imgBtn_SATELLITE=document.getElementById("G_SATELLITE_MAP");
	var imgBtn_MAP=document.getElementById("G_NORAMAL");
	imgBtn_SATELLITE.src="images/index/satellite_D.gif";
	imgBtn_MAP.src="images/index/gzmap_S.gif";
	
	var container=document.getElementById("G_SATEMapTypeControl");
	GEvent.clearListeners(container,"mousemove");
	GEvent.clearListeners(container,"mouseout");
	
	if(gOverlays&&mapExtension){
		mapExtension.removeFromMap(gOverlays);
	}
}