function switchMenu( o )
{
    o.onclick = function() {
        this.parentNode.className = ( this.parentNode.className == 'on' ) ? '' : 'on';
        return false;
    }
    /*
    var subMenu = new Object();
    // o.parentNode.className='on';
    
    for( i=0 ; i < o.parentNode.childNodes.length ; i++) {
        if( o.parentNode.childNodes[i].tagName == "UL" )
            subMenu = o.parentNode.childNodes[i];
    }
    
    // actions
    o.onclick = function() { this.parentNode.className='on'; return false; }
    o.onmouseout = function() { this.parentNode.className=''; }
    
    subMenu.onmouseover = function() { this.parentNode.className='on'; }
    subMenu.onmouseout = o.onmouseout;
    */
}