function SwapMain(img,largeimage)
{
var thisImage=document.getElementById('mainImage');
thisImage.src=img;
var largeImageSpot=document.getElementById('largeImage');
if(largeimage=='')
{
	largeImageSpot.innerHTML='';
}
else
{
	var zoomButton='<a href="images/products/large/'+largeimage+'" onclick="jQuery.facebox({image: \'images/products/large/'+largeimage+'\'}); return false;" target="_blank"><img src="images/site_images/zoom.gif" width="40" height="12"></a>';
	largeImageSpot.innerHTML=zoomButton;
}
}