$(document).ready(function () {
    $('.rollOverSplash').bind ('mouseover', function () {
        this.src = '/images/splash/'+this.id+"-over.gif";
    });
    $('.rollOverSplash').bind ('mouseout', function () {
        this.src = '/images/splash/'+this.id+".gif";
    });
    $('.rollOver').bind ('mouseover', function () {
        this.src = '/images/'+this.id+"-over.gif";
    });
    $('.rollOver').bind ('mouseout', function () {
        this.src = '/images/'+this.id+".gif";
    });
});