var overImg = new Array();
  overImg[0] = new Image(242,42);
  overImg[1] = new Image(242,42);
 
  var defaultImg = new Array();
  defaultImg[0] = new Image(242,42);
  defaultImg[1] = new Image(242,42);
 
  overImg[0].src = "/images/structure/get_your_free_advice_button.gif";
  overImg[1].src = "/images/structure/get_your_free_advice_button_active.gif";
 
  defaultImg[0].src = "/images/structure/get_your_free_advice_button.gif";
  defaultImg[1].src = "/images/structure/get_your_free_advice_button_active.gif";
 
  function rollImage(img,type){
    switch(type){
      case "over":
        document.images[img].src = overImg[img].src;
        alert;
        break;
      case "out":
        document.images[img].src = defaultImg[img].src;
        break;
    }
  }