var newWin = null;
 
function popUp(strURL, strWidth, strHeight) {
 
 if (newWin != null && !newWin.closed) 
   newWin.close(); 
 
 var strOptions=""; 
 
 strOptions="directories=no,scrollbars=no,menubar=no,toolbar=no,left=100,top=100,height="+strHeight+",width="+strWidth;

 newWin = window.open(strURL, 'newWin', strOptions); 
 newWin.focus(); 
}

function popUpScroll(strURL, strWidth, strHeight) {
 
 if (newWin != null && !newWin.closed) 
   newWin.close(); 
 
 var strOptions=""; 
 
 strOptions="directories=no,scrollbars=yes,menubar=no,toolbar=no,left=100,top=100,height="+strHeight+",width="+strWidth;

 newWin = window.open(strURL, 'newWin', strOptions); 
 newWin.focus(); 
}