function MenuNodeClick(currentNode) {
    if (window.location == currentNode.href) {
        if (currentNode.parentNode.getElementsByTagName('ul')[0] != null) {
            if (currentNode.parentNode.getElementsByTagName('ul')[0].style.display == 'none') {
                currentNode.parentNode.getElementsByTagName('ul')[0].style.display = ''
            }
            else {
                currentNode.parentNode.getElementsByTagName('ul')[0].style.display = 'none'
            }
        }
        return false;
    }
    return true;
}