// JavaScript Document
window.onload = rolloverInit;
function rolloverInit() {
	 for (var i=0; i<document.images.length; i++) {
		if (document.images[i].parentNode.tagName == "A") {
		   if (document.images[i].id) setupRollover(document.images[i]);
		}
	 }
}

function setupRollover(thisImage) {
	 thisImage.outImage = new Image();
	 thisImage.outImage.src = thisImage.src;
	 thisImage.onmouseout = rollOut;
	
	 thisImage.overImage = new Image();
	 thisImage.overImage.src = thisImage.src.substr(0, thisImage.src.lastIndexOf('.')) + '_on.png';
	 thisImage.onmouseover = rollOver;
}
	
function rollOver() {
	 this.src = this.overImage.src;
}
function rollOut() {
	 this.src = this.outImage.src;
}