// JavaScript Document

function swapImg() {
	if(document.getElementsByTagName) {
		var target = document.getElementById("target").getElementsByTagName("img");		
		var thumbs = document.getElementById("thumbnails").getElementsByTagName("img");
		for(var i=0; i < thumbs.length; i++) {
			thumbs[i].onmouseover = function() {
				target[0].setAttribute("src", this.getAttribute("src").replace("_s.", "."));
			}
		}
	}
}

if(window.addEventListener) {
	window.addEventListener("load", swapImg, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", swapImg);
}