images_loaded=0;
    
    function load_rollovers() {
             if (document.images) {  
                rollover = new MakeArray(18);
                rollover[0].src = "/images/home_off.gif";
                rollover[1].src = "/images/home_on.gif";
                rollover[2].src = "/images/company_off.gif";
                rollover[3].src = "/images/company_on.gif";
                rollover[4].src = "/images/planning_off.gif";
                rollover[5].src = "/images/planning_on.gif";
                rollover[6].src = "/images/design_off.gif";
                rollover[7].src = "/images/design_on.gif";
                rollover[8].src = "/images/construction_off.gif";
                rollover[9].src = "/images/construction_on.gif";
                rollover[10].src = "/images/testing_off.gif";
                rollover[11].src = "/images/testing_on.gif";
                rollover[12].src = "/images/installation_off.gif";
                rollover[13].src = "/images/installation_on.gif";
                rollover[14].src = "/images/integration_off.gif";
                rollover[15].src = "/images/integration_on.gif";
                rollover[16].src = "/images/contactus_off.gif";
                rollover[17].src = "/images/contactus_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;
                }
        }