/* garbage collector */
function Trash()
{
    var i,len;

    for (i = 0, len = garbageCollectors.length; i<len; i++)
    {
        garbageCollectors[i].callback.apply(garbageCollectors[i].context || window);

        try {
            delete garbageCollectors[i];
            garbageCollectors[i] = null;
        } catch (e) {}
    }