var newWin = null;
function closeWin(){
if (newWin != null){
if(!newWin.closed)
newWin.close();
}
}
function popUp(URL,Type,hauteur,largeur) {
closeWin();
var Options="";
var haut=(screen.height-hauteur)/2;
var Gauche=(screen.width-largeur)/2;
if (Type=="fixed") Options="status,height="+hauteur+",width="+largeur+",top="+haut+",left="+Gauche+"";
if (Type=="elastic") Options="resizable,scrollbars,height="+hauteur+",width="+largeur+",top="+haut+",left="+Gauche+"";
newWin = window.open(URL, 'newWin', Options);
newWin.focus();
}