function switchImg(from,to){
		//swaps pre loaded image objects' src properties (used for rollovers)
    	document[from].src = eval(to + ".src");
}

count = 0;
//var book1Images = new Array();
//book1Images = ["book1_1.jpg", "book1_2.jpg", "book1_3.jpg", "book1_4.jpg", "book1_5.jpg", "book1_6.jpg", "book1_7.jpg", "book1_8.jpg"];


count = 0;
var book1Images = new Array();

book1Images[0]=new Image();
book1Images[0].src='/images/book1_1.jpg';
book1Images[1]=new Image();
book1Images[1].src='/images/book1_2.jpg';
book1Images[2]=new Image();
book1Images[2].src='/images/book1_3.jpg';
book1Images[3]=new Image();
book1Images[3].src='/images/book1_4.jpg';
book1Images[4]=new Image();
book1Images[4].src='/images/book1_5.jpg';
book1Images[5]=new Image();
book1Images[5].src='/images/book1_6.jpg';
book1Images[6]=new Image();
book1Images[6].src='/images/book1_7.jpg';
book1Images[7]=new Image();
book1Images[7].src='/images/book1_8.jpg';



function loadImg(from,to){
		//swaps an image src with a remote url (used to show product images)
    	document[from].src = to;
}
function next(){
	if (count < book1Images.length - 1)
	{
		count = count + 1;
		document.prodImage.src = book1Images[count];
	}
	else 
	{
		count = 0;
		document.prodImage.src = book1Images[count];
	}
}

function back(){
	if (count > 0)
	{
		count = count - 1;
		document.prodImage.src = book1Images[count];
	}
	else 
	{
		count = 11;
		document.prodImage.src = book1Images[count];
	}
}