function newImage(arg) {
        if (document.images) {
                rslt = new Image();
                rslt.src = arg;
                return rslt;
        }
}

function changeImages() {
        if (document.images && (preloadFlag == true)) {
                for (var i=0; i<changeImages.arguments.length; i+=2) {
                        document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
                }
        }
}

var preloadFlag = false;
function preloadImages() {
        if (document.images) {
                menu_accueil_over = newImage("images/menu_accueil_over.gif");
                menu_formation_over = newImage("images/menu_formation_over.gif");
                menu_gestion_over = newImage("images/menu_gestion_over.gif");
                menu_dico_over = newImage("images/menu_dico_over.gif");
                ssmenu_programme_over = newImage("images/ssmenu_programme_over.gif");
                ssmenu_encadrements_over = newImage("images/ssmenu_encadrements_over.gif");
                ssmenu_orientations_over = newImage("images/ssmenu_orientations_over.gif");
                ssmenu_planning_over = newImage("images/ssmenu_planning_over.gif");
                ssmenu_cosmetique_over = newImage("images/ssmenu_cosmetique_over.gif");
                ssmenu_multimedia_over = newImage("images/ssmenu_multimedia_over.gif");
                ssmenu_auto_over = newImage("images/ssmenu_auto_over.gif");
                ssmenu_aero_over = newImage("images/ssmenu_aero_over.gif");
                ssmenu_brico_over = newImage("images/ssmenu_brico_over.gif");
                ssmenu_iaa_over = newImage("images/ssmenu_iaa_over.gif");
                preloadFlag = true;
        }
}

   function checkLinks() {
       if(!document.getElementsByTagName)
           return;
       var links = document.getElementsByTagName('A');
       for(var i=links.length-1; i>=0; --i)
           if(links[i].className.indexOf('dangerous') != -1)
               links[i].onclick = function (e) { 
                       return confirm("Voulez vous réellement effectuer cette action?" );
                   }
   }
  
   window.onload = checkLinks;