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; 
        if (strType=="scroll") 
   			strOptions="status,scrollbars,height="+strHeight+",width="+strWidth;
		if (strType=="tariff") 
   			strOptions="scrollbars,height="+screen.height+",width="+screen.width+"top=0,left=0";
 	newWin = window.open(strURL, 'newWin', strOptions); 
 	newWin.focus(); 
}