var Questions = new Array("Question_1","Question_2","Question_3","Question_4","Question_5")
var Answer = new Array("Question_1_answer","Question_2_answer","Question_3_answer","Question_4_answer","Question_5_answer")

function ChangeTab(Q) 
		{
			switch(Q)
			{
			case "Question_1":
			document.getElementById("Question_1").style.display="block";
			document.getElementById("Question_1_answer").style.display="none"; 
			break;
			case "Question_1_answer":
			document.getElementById("Question_1").style.display="none";
			document.getElementById("Question_1_answer").style.display="block"; 
			document.getElementById("Question_2_answer").style.display="none"; 
			document.getElementById("Question_3_answer").style.display="none"; 
			document.getElementById("Question_2").style.display="block";
			document.getElementById("Question_3").style.display="block";
			break;
			case "Question_2":
			document.getElementById("Question_2").style.display="block";
			document.getElementById("Question_2_answer").style.display="none"; 
			break;
			case "Question_2_answer":
			document.getElementById("Question_2").style.display="none";
			document.getElementById("Question_2_answer").style.display="block"; 
			document.getElementById("Question_1_answer").style.display="none"; 
			document.getElementById("Question_3_answer").style.display="none"; 
			document.getElementById("Question_1").style.display="block";
			document.getElementById("Question_3").style.display="block";
			break;
			case "Question_3":
			document.getElementById("Question_3").style.display="block";
			document.getElementById("Question_3_answer").style.display="none"; 
			break;
			case "Question_3_answer":
			document.getElementById("Question_3").style.display="none";
			document.getElementById("Question_3_answer").style.display="block";
			document.getElementById("Question_1_answer").style.display="none"; 
			document.getElementById("Question_2_answer").style.display="none"; 
			document.getElementById("Question_1").style.display="block";
			document.getElementById("Question_2").style.display="block";
			break;
			}	
		}