function hasClass(c, s) {
	var className = c.className;
	if (typeof className == 'undefined') return false;
	if (!className.split) return false;
	var classList = className.split(" ");
	for (var j=0; j<classList.length; j++) {
		prop = classList[j].split(":");
		if (prop[0] == s) {
			return true;
		}
	}
	return false;
}