function changeImage(newSRC, newHREF) {
	newHREF='javascript:popupWindow(\''+newHREF+'\');';
	images = document.getElementById('productMainImage').getElementsByTagName('img');
	links = document.getElementById('productMainImage').getElementsByTagName('a');
	links[0].href=newHREF;
	images[0].src=newSRC;
}

var preImages = new Array();
function preloadImage(num, src) {
	alert(num);
	alert(src);
	preImages[num] = new Image(20,20);
	preImages[num].src = src;
}