this.arrowmenu = new arrowmenu();

function arrowmenu()
{

    var current = null;

    function toggleItemFunction(element)
    {
        if (current != null)
            current.className = "";
        
        if (current != element.parentNode)
        {    
            element.parentNode.className = "clicked";
            current = element.parentNode;
        }
        else
            current = null;
    }
    
    this.toggleItem = toggleItemFunction;

}