function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}
if (document.images) {
 
  image5on = new Image();
  image5on.src ="images/image5_ov.gif";
  image6on = new Image();
  image6on.src ="images/image6_ov.gif";
  image7on = new Image();
  image7on.src ="images/image7_ov.gif";
  image8on = new Image();
  image8on.src ="images/image8_ov.gif";
  image5off = new Image();
  image5off.src = "images/image5.gif";
  image6off = new Image();
  image6off.src = "images/image6.gif";
  image7off = new Image();
  image7off.src = "images/image7.gif";
  image8off = new Image();
  image8off.src = "images/image8.gif";
  
}
 
  anotherImageDefault = new Image();
  anotherImageDefault.src = "images/anotherImage.gif";
  anotherImage1 = new Image();
  anotherImage1.src = "images/anotherImage1.gif";
  anotherImage2 = new Image();
  anotherImage2.src = "images/anotherImage2.gif";
  anotherImage3 = new Image();
  anotherImage3.src = "images/anotherImage3.gif";
  anotherImage4 = new Image();
  anotherImage4.src = "images/anotherImage4.gif";
  anotherImage5 = new Image();
  anotherImage5.src = "images/anotherImage5.gif";