this is what you have to put into the header. remember to change the red lines

<!-- function buildArray() {
         var a = buildArray.arguments;
         for (i=0; i<a.length; i++) {
         this[i] = a[i]; }
         this.length = a.length;}
var urls1 = new buildArray("",
"yourpage.here",
"yoursecondpage.here");
function go(which, num, win) {
  n = which.selectedIndex;
  if (n != 0) { var url = eval("urls" + num + "[n]")
    if (win) {openWindow(url); } else {
      location.href = url; } } }
    // --></script>