function switchMenu(obj, obj2) {
    var el = document.getElementById(obj);
    var e2 = document.getElementById(obj2);
    
    if ( el.style.display != 'none' ) {
        el.style.display = 'none';
        e2.style.backgroundImage = 'url(images/expand2.gif)';
    }
    else {
        el.style.display = '';
        e2.style.backgroundImage = 'url(images/expand.gif)';
    }
}

function $() {
var elements = new Array();
for (var i = 0; i < arguments.length; i++) {
var element = arguments[i];
if (typeof element == 'string')
element = document.getElementById(element);
if (arguments.length == 1)
return element;
elements.push(element);
}
return elements;
}

function collapseAll(objs) {
var i;
for (i=0;i<objs.length;i++ ) {
objs[i].style.display = 'none';
}
}