// Java Document


//Step 1
setInterval("changePic();", 5000);

//Step 2
function changePic(){
	
	//Step 3
	var currentPic = document.images['targetImage'];
	
	//Step 4
	var currentPicId = parseInt(currentPic.id);
	
	//Step 5
	if(currentPicId+1 == 4){
		currentPic.src = "images/image1.jpg"
		currentPic.id = 1;
	}
	
	//Step 6
	else {
		var currentPicSrc = 'images/image'+(currentPicId+1)+'.jpg';
		currentPic.src = currentPicSrc;
		var newPicId = currentPicId+1;
		currentPic.id = newPicId;
	}
}