// util.js

var popup_win;

function popup(url) 
{
	if(popup_win && popup_win.closed == false)
		popup_win.close();
	popup_win = window.open(url,'popup','width=444,height=613,screenx=10,screeny=10,left=10,top=10,toolbar=no,status=no,menubar=no,scrollbars=yes,resizable=yes');
}