function toggle(sender, target) 
{	
    var el = document.getElementById(target);
    if(el == null)
    {
        return false;
    }	
    if(el.className.indexOf('closed') < 0)
    {   
//        var image = sender.attributes.getNamedItem('src');
//        sender.attributes.removeNamedItem('src');
//        image.nodeValue.replace("contract", "expand");
//        sender.attributes.setNamedItem('src', image);
        sender.outerHTML = sender.outerHTML.replace("contract", "expand"); 
        el.className = el.className + ' closed';
    }
    else
    {    
//        var image = sender.attributes.getNamedItem('src');
//        sender.attributes.removeNamedItem('src');
//        image.nodeValue.replace("expand", "contract");
//        sender.attributes.setNamedItem('src', image);
        sender.outerHTML = sender.outerHTML.replace("expand", "contract"); 
        el.className = el.className.slice(0, el.className.indexOf('closed') -1);
    }
    return false;
}