function getElementsByClassName(oElm, strTagName, strClassName){
var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
var arrReturnElements = new Array();
strClassName = strClassName.replace(/\-/g, "\\-");
var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
var oElement;
for(var i=0; i<arrElements.length; i++){
var oElement = arrElements[i];
if(oRegExp.test(oElement.className)){
arrReturnElements.push(oElement);
}
}
return (arrReturnElements)
}

function openMenu(elementId)
{
var el = document.getElementById(elementId);
if (Element.childElements(el)) {
var uL = Element.childElements(el)[1];
var iS = true;
}
var opened = getElementsByClassName(document.getElementById("nav-left"), "li", "open");
for (var i = 0, j = opened.length; i < j; i++) {
if (opened[i] == el) {
var isAlreadyOpen = true;
}
Element.removeClassName(opened[i], 'open');
if(iS){ uL.removeClassName('shown-sub')};
}
if (isAlreadyOpen) {
Element.removeClassName(el, 'open');
if(iS){ uL.removeClassName('shown-sub')};
} else {
Element.addClassName(el, 'open');
if(iS){ uL.addClassName('shown-sub')};
}
}
function toggleVerticalMenu(el, over)
{
if (over) {
Element.addClassName(el, 'over');
}
else {
Element.removeClassName(el, 'over');
}
}