/*
var img1_on = new Image();
var img1_off = new Image();
var img2_on = new Image();
var img2_off = new Image();

img1_on.src="index.files/right_img_2.jpg";
img1_off.src="index.files/right_img_1.jpg";
img2_on.src="index.files/left_img_2.jpg";
img2_off.src="index.files/left_img_1.jpg";

function rollon(targetimage){
   if(targetimage=="image1"){
      document.images[targetimage].src=img1_on.src;
   }
   if(targetimage=="image2"){
      document.images[targetimage].src=img2_on.src;
   }

}
function rolloff(targetimage){
   if(targetimage=="image1"){
      document.images[targetimage].src=img1_off.src;
   }
   if(targetimage=="image2"){
      document.images[targetimage].src=img2_off.src;
   }
}

*/
/*
var img3_1 = new Image();
var img3_2 = new Image();
var img3_3 = new Image();
*/

var img4_1 = new Image();
var img4_2 = new Image();
var img4_3 = new Image();


/*
img3_1.src="index.files/sheet3d_1.jpg";
img3_2.src="index.files/sheet3d_2.jpg";
img3_3.src="index.files/sheet3d_3.jpg";
*/

img4_1.src="index.files/sheet3d_1.jpg";
img4_2.src="index.files/sheet3d_2.jpg";
img4_3.src="index.files/sheet3d_3.jpg";

var imgNum=1;

function changeImage(){
	if(imgNum==1){
		/*
document.image3.src=img3_1.src;
*/
		
		document.image4.src=img4_1.src;
		imgNum=2;
	}else if(imgNum==2){
		/*
document.image3.src=img3_2.src;
*/
		
		document.image4.src=img4_2.src;
		imgNum=3;
	}else if(imgNum==3){
		/*
document.image3.src=img3_3.src;
*/
		
		document.image4.src=img4_3.src;
		imgNum=1;
	}
	setTimeout("changeImage()",3500);
}