if (document.images) {

  image1over = new Image(); image1over.src = "../images/m1_over.gif";
  image2over = new Image(); image2over.src = "../images/m2_over.gif";
  image3over = new Image(); image3over.src = "../images/m3_over.gif";
  image4over = new Image(); image4over.src = "../images/m4_over.gif";
  image5over = new Image(); image5over.src = "../images/m5_over.gif";
  image6over = new Image(); image6over.src = "../images/m6_over.gif";
  image7over = new Image(); image7over.src = "../images/m7_over.gif";
  
  
  image1on = new Image(); image1on.src = "../images/m1_on.gif";
  image2on = new Image(); image2on.src = "../images/m2_on.gif";
  image3on = new Image(); image3on.src = "../images/m3_on.gif";
  image4on = new Image(); image4on.src = "../images/m4_on.gif";
  image5on = new Image(); image5on.src = "../images/m5_on.gif";
  image6on = new Image(); image6on.src = "../images/m6_on.gif";
  image7on = new Image(); image7on.src = "../images/m7_on.gif";
 

  image1off = new Image(); image1off.src = "../images/m1_off.gif";
  image2off = new Image(); image2off.src = "../images/m2_off.gif";
  image3off = new Image(); image3off.src = "../images/m3_off.gif";
  image4off = new Image(); image4off.src = "../images/m4_off.gif";
  image5off = new Image(); image5off.src = "../images/m5_off.gif";
  image6off = new Image(); image6off.src = "../images/m6_off.gif";
  image7off = new Image(); image7off.src = "../images/m7_off.gif";

}

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");
    }
  }
}