// set these variables 		
var numberOfLastImage = 2;	
var numberOfFirstImage = 1;	
var delayIn100thSeconds = 300;

var slide = new Array();

slide[1] = "images/couch_blanket_01.jpg";
slide[2] = "images/couch_noblanket_01.jpg";

var slideNumber = 0;

function showNextSlide() {	
	slideNumber++;
	
	// if past last slide
	if (slideNumber > numberOfLastImage) {
		slideNumber = numberOfFirstImage;
	}

	document.couch.src = slide[slideNumber];
	setTimeout("showNextSlide()",delayIn100thSeconds * 10);
}