// IMAGE CACHE
    if(document.images)
     {
       // on buttons
       map1=new Image(401,300);
       map1.src="map/map1.jpg";
       map2=new Image(401,300);
       map2.src="map/map2.jpg";
       map3=new Image(401,300);
       map3.src="map/map3.jpg";
       map4=new Image(401,300);
       map4.src="map/map4.jpg";
       map5=new Image(401,300);
       map5.src="map/map5.jpg";
       map6=new Image(401,300);
       map6.src="map/map6.jpg";
       map7=new Image(401,300);
       map7.src="map/map7.jpg";
       map8=new Image(401,300);
       map8.src="map/map8.jpg";
       map9=new Image(401,300);
       map9.src="map/map9.jpg";

       // off buttons
       map=new Image(401,300);
       map.src="map/map.jpg";
     }
// MOUSE OVER
 function change_one(newImg)
  {
    if(document.images)
     {
       document.images[newImg].src=eval(newImg + "1.src");
     }
  }
 function change_two(newImg)
  {
    if(document.images)
     {
       document.images[newImg].src=eval(newImg + "2.src");
     }
  }
 function change_three(newImg)
  {
    if(document.images)
     {
       document.images[newImg].src=eval(newImg + "3.src");
     }
  }
 function change_four(newImg)
  {
    if(document.images)
     {
       document.images[newImg].src=eval(newImg + "4.src");
     }
  }
 function change_five(newImg)
  {
    if(document.images)
     {
       document.images[newImg].src=eval(newImg + "5.src");
     }
  }
 function change_six(newImg)
  {
    if(document.images)
     {
       document.images[newImg].src=eval(newImg + "6.src");
     }
  }
 function change_seven(newImg)
  {
    if(document.images)
     {
       document.images[newImg].src=eval(newImg + "7.src");
     }
  }
 function change_eight(newImg)
  {
    if(document.images)
     {
       document.images[newImg].src=eval(newImg + "8.src");
     }
  }
 function change_nine(newImg)
  {
    if(document.images)
     {
       document.images[newImg].src=eval(newImg + "9.src");
     }
  }
 function change_off(newImg)
  {
    if(document.images)
     {
       document.images[newImg].src=eval(newImg + ".src");
     }
  }