$(document).ready(function(){
function changeSource1()
  {
  document.getElementById("content2").src="6.html"
  document.getElementById("content2").height="324"
    document.getElementById("Advanced Test2").innerHTML="<b>Advanced Test</b>";
  document.getElementById("Novice Test2").innerHTML="Novice Test";
  document.getElementById("Questions: Tier I2").innerHTML="Questions: Tier I";
  document.getElementById("Questions: Tier II2").innerHTML="Questions: Tier II";
  document.getElementById("Questions: Tier III2").innerHTML="Questions: Tier III";
  }
 function changeSource2()
  {
  document.getElementById("content2").src="21.html"
  document.getElementById("content2").height="324"
       document.getElementById("Advanced Test2").innerHTML="Advanced Test";
  document.getElementById("Novice Test2").innerHTML="<b>Novice Test</b>";
  document.getElementById("Questions: Tier I2").innerHTML="Questions: Tier I";
  document.getElementById("Questions: Tier II2").innerHTML="Questions: Tier II";
  document.getElementById("Questions: Tier III2").innerHTML="Questions: Tier III";
  } 
  function changeSource3()
  {
  document.getElementById("content2").src="engtier1.htm"
  document.getElementById("content2").height="1160"
      document.getElementById("Advanced Test2").innerHTML="Advanced Test";
  document.getElementById("Novice Test2").innerHTML="Novice Test";
  document.getElementById("Questions: Tier I2").innerHTML="<b>Questions: Tier I</b>";
  document.getElementById("Questions: Tier II2").innerHTML="Questions: Tier II";
  document.getElementById("Questions: Tier III2").innerHTML="Questions: Tier III";
  }
    function changeSource4()
  {
  document.getElementById("content2").src="engtier2.htm"
  document.getElementById("content2").height="1450"
      document.getElementById("Advanced Test2").innerHTML="Advanced Test";
  document.getElementById("Novice Test2").innerHTML="Novice Test";
  document.getElementById("Questions: Tier I2").innerHTML="Questions: Tier I";
  document.getElementById("Questions: Tier II2").innerHTML="<b>Questions: Tier II</b>";
  document.getElementById("Questions: Tier III2").innerHTML="Questions: Tier III";
  }
      function changeSource5()
  {
  document.getElementById("content2").src="engtier3.htm"
  document.getElementById("content2").height="1160"
  document.getElementById("Advanced Test2").innerHTML="Advanced Test";
  document.getElementById("Novice Test2").innerHTML="Novice Test";
  document.getElementById("Questions: Tier I2").innerHTML="Questions: Tier I";
  document.getElementById("Questions: Tier II2").innerHTML="Questions: Tier II";
  document.getElementById("Questions: Tier III2").innerHTML="<b>Questions: Tier III</b>";
  }

	var sections = $("#menu2 li");
	var loading = $("#loading2");
	var content = $("#content2");
	
	sections.click(function(){

		switch(this.id){
			case "Advanced Test2":
				content.slideUp();
				onclick=changeSource1();
				content.slideDown();
				break;
			case "Novice Test2":
				content.slideUp();
				onclick=changeSource2();
				content.slideDown();
				break;
			case "Questions: Tier I2":
				content.slideUp();
				onclick=changeSource3();
				content.slideDown();
				break;
			case "Questions: Tier II2":
				content.slideUp();
				onclick=changeSource4();
				content.slideDown();
				break;
			case "Questions: Tier III2":
				content.slideUp();
				onclick=changeSource5();
				content.slideDown();
				break;
			default:
				break;
		}
	});

	
});