function rollOverTr(param, className) {
	param.className=className;
	if (param.childNodes[0].childNodes[0]) {
		param.childNodes[0].childNodes[0].src = "img/performer_icon_blue.gif";
	} else {
		param.childNodes[1].childNodes[0].src = "img/performer_icon_blue.gif";
	}
}
function rollOutTr(param, className) {
	param.className = className;
	if (param.childNodes[0].childNodes[0]) {
		param.childNodes[0].childNodes[0].src="img/performer_icon_white.gif";
	} else {
		param.childNodes[1].childNodes[0].src = "img/performer_icon_white.gif";
	}
}