function Ouvrir_pop(url,wp,hp,titre)
{
         var TailleHaut= document.body.clientHeight;
         var TailleLarg= document.body.clientWidth;
         var width=(TailleLarg*wp)/100;
         var height=(TailleHaut*hp)/100;
         var top=(TailleHaut-height)/2+(TailleLarg*0.1);
         var left=(TailleLarg-width)/2;
         window.open(url,titre,"resizable=no, scrollbars=yes, toolbars=no,status=no,width="+width+", height="+height+", top="+top+", left="+left);
}