var win=null;
function openWin(theURL,larg,haut,scroll){
	if (win != null ) { win.close(); }
	win=window.open(theURL,"NBoy","toolbar=no, location=no, directories=no, status=yes, scrollbars="+scroll+", resizable=yes, copyhistory=no, width="+larg+", height="+haut+", left=300, top=50");
}