function getTree(o){
    var a = [],
        child = o.firstElementChild;
    while(child!=='undefined')
    {
        a.push({
            parent : child,
            childs : (function(){
                if (child.firstElementChild)
                {
                    return getTree(child);
                }
                else
                {
                    return null;
                }
            })()
        });
        if (child.nextElementSibling)
        {
            child=child.nextElementSibling;
        }
        else
        {
            child='undefined';
        }
    }

    return a;
}