function mnu_expand(level,objid,obj){
	if(document.getElementById){
		if(document.documentElement){
			var tmp = navigator.userAgent+"";
			tmp = tmp.toUpperCase();
			if(tmp.indexOf("GECKO")>1){
			}
			else{
				var canvas=document.getElementById("sub" + level + objid);
				if(canvas){
					canvas.style.display=(canvas.style.display=="block")?"none":"block";
					canvas.style.display=="block"?mnu_updateGraphics(objid, "minus.gif"):mnu_updateGraphics(objid, "plus.gif");					
					return(false);
				}
			}
		}
	}
	return(true);
}


function mnu_updateGraphics(objid, sImgName){
	var oImg = document.all["imgexp"+objid];
	var oImgPath = oImg.src.substr(0, oImg.src.lastIndexOf("/"));
	oImg.src = oImgPath + "/" + sImgName; 	
}