how to apply the themes

Hi everyone,
I am now following ALAN's project files to catch up everything what I missed and sometimes I am struggling to understand ... I forgot many things. If you have time, can you help me?

< Question >
I can not find out how to apply the themes (including image,css,skin) to web pages because the theme attribute of the @Page directive (eg. <%@ Page Theme="SkinFile" %>) is not set in the all Web Pages of ALAN's project.
Do you remember how & where Alan applied that?

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I got the answer from the below page after I posted!
http://www.dotnettreats.com/samplethemes/Default.aspx
He uses "Web.config" to apply the theme for the Web site. :D

C# Unit Testing - Divide function div()

using System;
using System.Text;
using System.Collections.Generic;
using System.Linq;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using MyCal;

namespace CalcTestProject
{
    /// <summary>
    /// Summary description for UnitTest1
    /// </summary>
    [TestClass]
    public class DivTest
    {      

        #region Additional test attributes
        //
        // You can use the following additional attributes as you write your tests:
        //
        // Use ClassInitialize to run code before running the first test in the class
        // [ClassInitialize()]
        // public static void MyClassInitialize(TestContext testContext) { }
        //
        // Use ClassCleanup to run code after all tests in a class have run
        // [ClassCleanup()]
        // public static void MyClassCleanup() { }
        //
        // Use TestInitialize to run code before running each test 
        // [TestInitialize()]
        // public void MyTestInitialize() { }
        //
        // Use TestCleanup to run code after each test has run
        // [TestCleanup()]
        // public void MyTestCleanup() { }
        //
        #endregion

        [TestMethod]
        public void Test_ValidPositive()
        {
            //call method defined in the MyMath class
            Assert.AreEqual(MyMath.Div("20","5"),"4.00");
            Assert.AreEqual(MyMath.Div("25", "2"), "12.50");
            Assert.AreEqual(MyMath.Div("20", "3"), "6.67");
            Assert.AreEqual(MyMath.Div("2147483647", "2"), "1073741823.50");
        }

        [TestMethod]
        public void Test_ValidNegative()
        {
            Assert.AreEqual(MyMath.Div("-40", "2"), "-20.00");
            Assert.AreEqual(MyMath.Div("50", "-2"), "-25.00");
            Assert.AreEqual(MyMath.Div("-4", "-2"), "2.00");
            Assert.AreEqual(MyMath.Div("-2147483648", "-4"), "536870912.00");
        }

        [TestMethod]
        public void Test_ValidZeroes()
        {
            Assert.AreEqual(MyMath.Div("0", "2"), "0.00");
            Assert.AreEqual(MyMath.Div("2", "0"), "ERROR");
            Assert.AreEqual(MyMath.Div("0", "0"), "ERROR");            
        }

        [TestMethod]
        [ExpectedException (typeof (FormatException))]
        public void Test_CharFirstInput()
        {
            MyMath.Div("2aa", "4");
           
        }

        [TestMethod]
        [ExpectedException(typeof(FormatException))]
        public void Test_NotIntInput()
        {
            MyMath.Div("5.5", "2");
            MyMath.Div("4", "2.2");
        }

        [TestMethod]
        [ExpectedException(typeof(FormatException))]
        public void Test_NotValidInput()
        {
            MyMath.Div("", "2");
            MyMath.Div("22", "");
        }

        [TestMethod]
        [ExpectedException(typeof(OverflowException))]
        public void Test_RangeError()
        {
            MyMath.Div("2147483648", "2");
            MyMath.Div("22", "-4147483467");
        }

    }
}