// JavaScript Document
if (document.images)   {
     image1on = new Image();
     image1on.src= "m1_on.jpg";

     image1off = new Image();
     image1off.src = "m1_off.jpg";
     
     image2on = new Image();
     image2on.src= "m2_on.jpg";

     image2off = new Image();
     image2off.src = "m2_off.jpg";
     
     image3on = new Image();
     image3on.src= "m3_on.jpg";

     image3off = new Image();
     image3off.src = "m3_off.jpg";
     
     image4on = new Image();
     image4on.src= "m4_on.jpg";

     image4off = new Image();
     image4off.src = "m4_off.jpg";
     
     image5on = new Image();
     image5on.src= "m5_on.jpg";

     image5off = new Image();
     image5off.src = "m5_off.jpg";
     
     image6on = new Image();
     image6on.src= "m6_on.jpg";

     image6off = new Image();
     image6off.src = "m6_off.jpg";
     
     image7on = new Image();
     image7on.src= "m7_on.jpg";

     image7off = new Image();
     image7off.src = "m7_off.jpg";

}

function turnOn(imageName)   {
     if (document.images)   {
     document[imageName].src = eval(imageName + "on.src");
     }
}

function turnOff(imageName)   {
     if (document.images)   {
     document[imageName].src = eval(imageName + "off.src");
     }
}

// -->