function popup(url)
{
  var w = 600;
  var h = 500;
  var scroll = 'yes';
  var myname='Popup';
  var settings  ='height='+h+',';
      settings +='width='+w+',';
      settings +='scrollbars='+scroll+',';
      settings +='resizable=yes'; 
	  
   win = window.open(url,myname,settings);
    if(parseInt(navigator.appVersion) >= 4){win.window.focus();}
}