Cykliczny background

[Kartofelek]

Źle napisane.

Kod:

<script type="text/javascript">
var index = 1;
jQuery.fn.poka=function() {
    var $t = $(this);
    $t.css('background-image', 'url(images/p' + index + '.jpg)');
    index++;
    if (index >= 10) index = 1;
    setTimeout(
        function() {
            $t.poka() //w setTimeout this = window
        }
        ,3000
    );
}
$(document).ready(function() {

$("#wrap").poka();
});
</script>