if (document.images) {
    var home_over = new Image(); var brands_over = new Image(); var investors_over = new Image(); var aboutus_over = new Image(); var careers_over = new Image(); var home_off = new Image(); var brands_off = new Image(); var investors_off = new Image(); var aboutus_off = new Image(); var careers_off = new Image();
    home_over.src = "images/nav/home_over.gif"; brands_over.src = "images/nav/brands_over.gif"; investors_over.src = "images/nav/investors_over.gif"; aboutus_over.src = "images/nav/aboutus_over.gif"; careers_over.src = "images/nav/careers_over.gif"; home_off.src = "images/nav/home_off.gif"; brands_off.src = "images/nav/brands_off.gif"; investors_off.src = "images/nav/investors_off.gif"; aboutus_off.src = "images/nav/aboutus_off.gif"; careers_off.src = "images/nav/careers_off.gif"; 
  }
	function over_button(obj){ if (document.images) { document[obj.name].src = eval(obj.name+'_over').src; } }
  function off_button(obj){ if (document.images) { document[obj.name].src = eval(obj.name+'_off').src; } }