function openWindow($file) 
{
   var newWin = window.open($file,'_blank','location,resizable,scrollbars,width=800,height=700');
   newWin.focus();
}

function openWindow2() 
{
   var newWin = window.open('popup.php','_blank','location,width=640,height=620');
   newWin.focus();
}

function openWindow3($file)
{
   var newWin = window.open($file,'_blank','location');
   newWin.focus();
}