function classNameTest () {
	var ClassItems = document.getElementsByClassName('listing');
	alert(ClassItems.length);
}

function resizeBoxes (boxClass) {

	var boxItems = document.getElementsByClassName(boxClass);
	var srcH, lstngH, tmpH;
	for (x=0;x<boxItems.length;x++) {
		tmpH = Element.getHeight(boxItems[x]);
		if (!srcH || tmpH > srcH) { srcH = tmpH; }
	}

	for (x=0;x<boxItems.length;x++) {
		boxItems[x].style.pixelHeight = srcH;
		boxItems[x].style.height = srcH;
	}

}