$(function () {
    setUpHandlers();
});

function setUpHandlers() {
    $(".slider-textbox").live('change',moveBackground);
}

function moveBackground(event) {
    $(this).prev().removeClass();
    switch (event.currentTarget.value) {
        case "0":
            $(this).prev().addClass('slider-rail position-zero');
            break;
        case "1":
            $(this).prev().addClass('slider-rail position-one');
            break;
        case "2":
            $(this).prev().addClass('slider-rail position-two');
            break;

        default:
    }
}