images_loaded=0;
    
    function load_rollovers() {
             if (document.images) {  
                rollover = new MakeArray(8);
                rollover[0].src = "/images/buttons/contactus_off.gif";
                rollover[1].src = "/images/buttons/contactus_on.gif";
                rollover[2].src = "/images/buttons/callus_off.gif";
                rollover[3].src = "/images/buttons/callus_on.gif";
                rollover[4].src = "/images/buttons/requestaquote_off.gif";
                rollover[5].src = "/images/buttons/requestaquote_on.gif";
                rollover[6].src = "/images/buttons/download_off.gif";
                rollover[7].src = "/images/buttons/download_on.gif";
                images_loaded=1;
                                
             }
                
}
        function MakeArray(n) {
                this.length = n;
                for (var i = 0; i< n; i++) {
                        this[i] = new Image();
                }
                return this;
        }
           function chng_rollover(imgName,ro_Num) {
                if (document.images) {
                        document [imgName].src = rollover[ro_Num].src;
                }
        }