var visibleVar="null";

        if (navigator.appName == "Netscape") {
				layerStyleRef="layer.";
				layerRef="document.layers";
				styleSwitch="";
				visibleVar="show";
        }else{
				layerStyleRef="layer.style.";
				layerRef="document.all";
				styleSwitch=".style";
				visibleVar="visible";
		}
	

	function showHideLayerSwitch(layerName){
		if (eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility == visibleVar')){
			hideLayer(layerName);
		}else{
			showLayer(layerName);
		}
	}
	function showLayer(layerName){
		eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="visible"');
	}
	
	function hideLayer(layerName){
		eval(layerRef+'["'+layerName+'"]'+styleSwitch+'.visibility="hidden"');
	}

function start(desktopURL,w,h)
{
    desktop = window.open(desktopURL, "navi","toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=yes "+",width="+w+",height="+h );
}