function hi(n) {
  obj1 = eval("document.all.menu"+n);
  obj2 = eval("document.all.menuleft"+n);
  obj1.style.backgroundImage="url(img/hi1.gif)";
  obj2.style.backgroundColor="#CC3399";
}

function ou(n) {
  obj1 = eval("document.all.menu"+n);
  obj2 = eval("document.all.menuleft"+n);
  obj1.style.backgroundImage="url(img/p.gif)";
  obj2.style.backgroundColor="#FFCFFF";
}