function popup(mylink, name,w,h) 
{ 
//var h = 400; 
//var w = 600; 
//if (popWin && !popWin.closed) 
//{ //alert('Window Open'); 
//popWin.close(); 
//} 
winprops = 'height='+h+',width='+w+',scrollbars=yes,resizable,toolbars=yes'; 
popWin = window.open(mylink, name,winprops); 
popWin.focus(); 
//popWin.document.close(); 
return false; 
}