function rollPic(strOffSrc, strOverSrc) {
	if (document.images) {
		this.off = new Image();
		this.over = new Image();
		this.off.src = strOffSrc;
		this.over.src = strOverSrc;
	}
}
function roll(strPic, strAction, strMsg) {
	if (document.images) {
		document.images[strPic].src = eval(strPic + '.' + strAction + '.src')
	}
	if (strMsg) {
		window.status = strMsg;
		return true;
	}
}