var i=0;
var theCaption='';
function rotate(pos,imgArr){
	i=i+pos;
	
	if (i == imgArr.length) 
		i=0;
	else if (i < 0) 
		i=imgArr.length-1;
		
	if (imgArr[i][0].length > 0)
		theCaption='<h5>'+imgArr[i][0]+'</h5>';
	else
		theCaption='';
		
	document.getElementById("product_image").innerHTML = '<img src="/images/products/'+imgArr[i][2]+'" width="114" height="114" alt="'+imgArr[i][3]+'" title="'+imgArr[i][3]+'" />';
	document.getElementById("product_caption").innerHTML = theCaption+'<p class="ptb0">'+imgArr[i][1]+'</p>';
}