var PollCB = function(request, id){

    var elem = $(id);

    var size = elem.getSize();

    if(request == false){

        $(id + 'submit').disabled = true;

        var newElem = new Element('div', {

            'class': 'loading',

            'styles': { 'height': size.size.y }

        });

        elem.empty();

        newElem.injectInside(elem);

    } else {

        elem.empty();

        var newElem = new Element('div');

        newElem.setHTML(request);

        newElem.setStyles({

            'position': 'relative',

            'top': '-500px',

            'visibility':'hidden'

        });

        newElem.injectTop(elem);

        var s = newElem.getSize();

        elem.setStyles({

            'height': s.size.y,

            'position': 'relative',

            'overflow': 'hidden'

        });





        var slider = new Fx.Style(newElem, 'top', {duration:2000});

        slider.start(-s.size.y, 0);

        newElem.setStyle('visibility', 'visible');

    }

};