function rollover() {


	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(window.addEventListener) {


	window.addEventListener("load", rollover, false);


}


else if(window.attachEvent) {


	window.attachEvent("onload", rollover);


}