var newWin = null; 
var strOptions="";

function popUp(strURL, strType, strHeight, strWidth) { 
	if (newWin != null && !newWin.closed)
	newWin.close();
	if (strType=="console") strOptions="resizable,height="+strHeight+",width="+strWidth; 
	if (strType=="fixed") strOptions="status,height="+strHeight+",width="+strWidth; 
	if (strType=="scrolling") strOptions="scrollbars,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(); 
	}