function em(e) {
	return document.getElementById(e);
}
function domain() {
	var tmp = location.host.split(".");
	var len = tmp.length;
	return tmp[len - 2];
}
function g_cookie(name) {
	var arg = name + "=";
	var alen = arg.length;
	var c = document.cookie;
	var clen = c.length;
	var i = 0;
	while (i < clen) {
		var j = i + alen;
		if (c.substring(i, j) == arg) {
			return _GetCookieVal(j);
		}
		i = c.indexOf(" ", i) + 1;
		if (i == 0) {
			break;
		}
	}
	return null;
}
function _GetCookieVal(offset) {
	var c = document.cookie;
	var endstr = c.indexOf(";", offset);
	if (endstr == -1) {
		endstr = c.length;
	}
	return unescape(c.substring(offset, endstr));
}
function s_cookie(name, value) {
	var expdate = new Date();
	var argv = s_cookie.arguments;
	var argc = s_cookie.arguments.length;
	var expires = (argc > 2) ? argv[2] : null;
	var path = (argc > 3) ? argv[3] : null;
	var domain = (argc > 4) ? argv[4] : null;
	var secure = (argc > 5) ? argv[5] : false;
	if (expires != null) {
		expdate.setTime(expdate.getTime() + (expires * 1000));
	}
	document.cookie = name + "=" + escape(value) + ((expires == null) ? "" : ("; expires=" + expdate.toGMTString())) + ((path == null) ? "" : ("; path=" + path)) + ((domain == null) ? "" : ("; domain=" + domain)) + ((secure == true) ? "; secure" : "");
}