function open_popup(url)
{
	//alert(url);
	var newWindow;
	var t;
	t = "no";
	if (String(t)=='no') {
		newWindow = window.open(url,"message","toolbar=" + t + ",scrollbars=yes,left=100,resizable=yes,width=500,height=600");
	}
	if (String(t)=='yes') {
		newWindow = window.open(url,"message","scrollbars=yes,resizable=yes,menubar=yes,status=yes,toolbar=yes,directories=yes,personalbar=yes,location=yes,hotkeys=yes,width=500,height=600");
	}
	if (window.focus) { newWindow.focus(); }

	//newwindow = window.open (url,'Hi','width=800,height=600,middle');
	//newwindow.focus();
	//var y = window.prompt("please enter user name") 
	//alert (y);
}