window.onload = initAll;

function initAll() {
     var allLinks = document.getElementsByTagName("a");

     for (var i=0; i<allLinks.length; i++) {
         if (allLinks[i].className.indexOf("menuLink") > -1) {
             allLinks[i].onclick = toggleMenu;
         }
     }
}

function toggleMenu() {
     var startMenu = this.href.lastIndexOf("/")+1;
     var stopMenu = this.href.lastIndexOf(".");
     var thisMenuName = this.href.substring(startMenu,stopMenu);

     var thisMenu = document.getElementById(thisMenuName).style;
     thisMenu.display = (thisMenu.display == "block") ? "none" : "block";

     return false;
}