// list rolls
function mouse_event(e) {
	e = e || event;
	var obj = e.target || e.srcElement;

	var tname = (obj.nodeType == 1) ? obj.tagName.toLowerCase() : '';

	while (tname != 'tr' && tname != 'table') {
		obj = obj.parentNode || obj.parentElement;
		tname = obj.tagName.toLowerCase();
	}

	if (tname == 'tr') {
		switch (e.type) {
		case 'mouseover':
				obj.className = 'trroll';
				break;
		case 'mouseout':
				obj.className = "";
				break;
		}
	}
}

function mouse_event(obj, newClass) {
	obj.className = newClass;
}