function openWin(url,width,height)
{	//alert(url + " " + w + " " + h);

	var features = ",scrollbars=no,resizable=no,status=no,menubar=no,location=no";
	var left = (screen.width) ? Math.round((screen.width-width)/2) : 0;
	var top = (screen.height) ? Math.round((screen.height-height)/2) : 0;
	var dimensions = "width="+width+",height="+height+",top="+top+",left="+left;
	var name = "popup";
	var win = window.open(url,name,dimensions+features);
	win.focus();
	
}