function PreLoad() {
                n = new Array("home", "services", "contact", "about", "reference", "pricing");
                i = new Array();
                for(j=0; j < n.length; j++) {
                        i[j] = new Image();
                        i[j].src = "buttons/" + n[j] + "-in.png";
                }
        }

        function SwapIn(Name) {
                document[Name].src = "/buttons/" + Name + "-in.png";
        }

        function SwapOut(Name) {
                document[Name].src = "/buttons/" + Name + "-out.png";
        }