function openwindow(id){
window.open(id, '_blank', 'scrollbars=no,location=no,menubar=no,width=500,height=500,resizable=no');
}
function historique(id){
window.open(id, '_blank', 'scrollbars=yes,location=no,menubar=no,width=570,height=530,resizable=no');
}

function contact(id,l,h){
window.open(id, "_blank", 'scrollbars=no,location=no,menubar=no,width='+l+',height='+h+',resizable=no');
}