window.addEventListener?window.addEventListener('load',rolloverInit,false):window.attachEvent('onload',rolloverInit);

/*window.onload = rolloverInit; */

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

function setupRollover(thisImage) {
	thisImage.outImage = new Image();
	thisImage.outImage.src = thisImage.src;
	thisImage.onmouseout = rollOut;

	thisImage.overImage = new Image();
	if (thisImage.id != '') {
	thisImage.overImage.src = "images/" + thisImage.id + "_on.jpg";
	} else {
	thisImage.overImage.src = thisImage.src;
	}
	thisImage.onmouseover = rollOver;	
}

function rollOut() {
	this.src = this.outImage.src;
}

function rollOver() {
	this.src = this.overImage.src;
}