$(
    function() {
        //$("*:not([class=RightClickEnabled])").contextmenu
        $(".RightClickDisabled, td.homeSection img, #homePageBanner img").contextmenu(
            function(e) {

                if ($(".RightClickEnabled").data("clicked") == "yes")
                    $(".RightClickEnabled").data("clicked", "no");
                else
                    e.preventDefault();
            }
         );

        $(".RightClickEnabled").contextmenu(
             function(e) {
                 $(".RightClickEnabled").data("clicked", "yes");
             }
         );
    }
 );

$.fn.contextmenu = function(func) {
    return this.bind("contextmenu", func);
}