function smartRollover() {
	if(document.getElementsByTagName) {
		var images = document.getElementsByTagName("img");

		for(var i=0; i < images.length; i++) {
			if(images[i].getAttribute("src").match("_off."))
			{
				images[i].onmouseover = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_off.", "_on."));
				}
				images[i].onmouseout = function() {
					this.setAttribute("src", this.getAttribute("src").replace("_on.", "_off."));
				}
			}
		}
	}

	if(document.getElementById("ttBtn")){
		var btnElem = document.getElementById("ttBtn");
		btnElem.onmouseover = function(){
			this.setAttribute("src", this.getAttribute("src").replace("ttBtn.", "ttBtnOn."));
		}
		btnElem.onmouseout = function(){
			this.setAttribute("src", this.getAttribute("src").replace("ttBtnOn.", "ttBtn."));
		}
	}
	if(document.getElementById("ttBtn2")){
		var btnElem = document.getElementById("ttBtn2");
		btnElem.onmouseover = function(){
			this.setAttribute("src", this.getAttribute("src").replace("ttBtn2.", "ttBtn2On."));
		}
		btnElem.onmouseout = function(){
			this.setAttribute("src", this.getAttribute("src").replace("ttBtn2On.", "ttBtn2."));
		}
	}

}

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