function zoom(pic_id,w,h){
	var winl = (screen.width-w)/2;
	var wint = (screen.height-h)/2;
	window.open("zoom-pic.php?id="+pic_id,"","top="+wint+",left="+winl+",resizable=0,toolbars=0,scrollbars=0,menu=0,width="+w+",height="+h+",status=0");
}