attachHoverAndFocus = function () {
	var woink = document.getElementsByTagName ("tr");
	for (var j = 0; j < woink.length; j++) {
		woink[j].onmouseover = function () { 
			this.className += ' hover'; 
		}
		woink[j].onmouseout = function () { 
			this.className = this.className.replace (' hover', ''); 
		}
	}
}
if (window.attachEvent) window.attachEvent('onload', attachHoverAndFocus);