$DOM.className("gallery_thumbnails", "div").each(function(t){
	$DOM.elements("a", t).each(function(a){
		a.onclick = function(){
			var gallery_main = $DOM.className("gallery_main", "div", $DOM.parent(this, 2))[0];
			var gallery_img = $DOM.elements("img", gallery_main)[0];
			gallery_img.setAttribute("src", this.getAttribute("href"));
			return false;
		}
	});
});