function serverDialog(show) {
		show = show||0;
		var d=document.getElementById("dialog").style;
		var b=document.getElementById("bgcover").style;
		if(show && __u) {
			b.height=document.documentElement.scrollHeight+"px";
			d.display="";
			b.display="";
		}else{
			d.display="none";
			b.display="none";
		}
		
}