var newWin = null; 
function popUp(strURL, strType, strHeight, strWidth) { 
if (newWin != null && !newWin.closed) 
newWin.close(); 
var strOptions=""; 
if (strType=="console") 
strOptions="resizable,height="+ 
strHeight+",width="+strWidth; 
if (strType=="fixed") 
strOptions="status,height="+ 
strHeight+",width="+strWidth; 
if (strType=="elastic") 
strOptions="toolbar,menubar,scrollbars,"+ 
"resizable,location,height="+ 
strHeight+",width="+strWidth; 
newWin = window.open(strURL, 'newWin', strOptions); 
newWin.focus(); 
}