function imgline (display,image) {
	this.length=3;
	this.disp = display;
	this.img = image;
}

var ssimg = new Array();
ssimg[0]=3;
ssimg[1] = new imgline(true,"cat2bed150.jpg");
ssimg[2] = new imgline(true,"revolution150.jpg");

//set toggle for swapping images
var even=false;
var slidecount=1;

function bookSlide(){
	timer=setTimeout('showSlide()',10);
	interval=setInterval('showSlide()',4000);
}

function showSlide(){
	if(even){
		$("#book3").css("background-image","url(images/"+ssimg[1].img+")");
		$("#book2").fadeOut(1000);
		even=false;
	}else{
		$("#book2").css("background-image","url(images/"+ssimg[2].img+")");
		$("#book2").fadeIn(1000);
		even=true;
	}
}

function stopInterval(){
	clearTimeout(timer);
	clearInterval(interval);
}