//**************************
// Popup
//**************************
function ShowPop(id)
{
   document.getElementById(id).style.visibility = "visible";
}
function HidePop(id)
{
   document.getElementById(id).style.visibility = "hidden";
}
//**************************

function popupcentree(page,largeur,hauteur,options) 
{ 
    var top=(screen.height-hauteur)/2; 
    var left=(screen.width-largeur)/2;
    window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options); 
} 
-->