var imageURL = "images/brownMid.jpg";

if (document.images) {
     var clock = new Image();
     clock.src = "images/brownMid.jpg";

     var cup = new Image();
     cup.src = "images/green.gif";
}

function changeImage1() {
     if (document.images) {
          if (imageURL == "images/green.gif") imageURL = "images/brownMid.jpg";
		  else imageURL = "images/green.gif";

         document.myImage.src = imageURL;
     }
}


var imageURL = "images/brownMid.jpg";

if (document.images) {
     var clock = new Image();
     clock.src = "images/brownMid.jpg";

     var cup = new Image();
     cup.src = "images/red.gif";


}

function changeImage2() {
     if (document.images) {
          if (imageURL == "images/red.gif") imageURL = "images/brownMid.jpg";
		  else imageURL = "images/red.gif";

         document.myImage.src = imageURL;
     }

}
 
var imageURL = "images/brownMid.jpg";

if (document.images) {
     var clock = new Image();
     clock.src = "images/brownMid.jpg";

     var cup = new Image();
     cup.src = "images/white.gif";


}

function changeImage3() {
     if (document.images) {
          if (imageURL == "images/white.gif") imageURL = "images/brownMid.jpg";
		  else imageURL = "images/white.gif";

         document.myImage.src = imageURL;
     }

}