function popupWindow(url)
{
  var scrsz = screen.width && screen.height ? ('scrW=' + screen.width + '&scrH=' + screen.height) : '';
  var wnd = window.open(url + ((url.indexOf('?') < 0) ? '?' : '&') + scrsz,'popupWindow','toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=yes, copyhistory=no, width=300, height=200, screenX=75, screenY=50, top=25, left=75');
  wnd.focus();
}

function popupWindowMain(url) 
{ 
  popupWindow(url); 
}