function bannerRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");
		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_out.")) {
				images[i].onmouseover = function() {
				this.setAttribute("src", this.getAttribute("src").replace("_out.", "_over."));
				}
			images[i].onmouseout = function() {
				this.setAttribute("src", this.getAttribute("src").replace("_over.", "_out."));
				}
			}
		}
	}
}