jQuery(document).ready(
    function(){

        //alert( 'here' );

        jQuery(".xnav img, .hp_cta img, .int_cta img").hover(
            function()
            {
                this.src = this.src.replace(".jpg","-hover.jpg");
            },
            function()
            {
                this.src = this.src.replace("-hover.jpg",".jpg");
            }
            );


    }
    );