function addTabClass(obj, className) {
	className = (typeof(className) == "undefined" ? "disn":className);
	var object = $("#"+obj);
	var length = object.children().length;
	for (var i = 0; i < length; i++) {
		object.children().eq(i).addClass(className);
	}
}

function romoveTabClass(obj, className) {
	className = (typeof(className) == "undefined" ? "disn":className);
	var object = $("#"+obj);
	var length = object.children().length;
	for (var i = 0; i < length; i++) {
		object.children().eq(i).removeClass(className);
	}
}