function showAnswer(ans_num)
  {
    /* This function is used to display the answer
     when the user clicks a question from the
	 faq.html page
    */
	
    if(ans_num==1)
	{	  
	  //set display to hide other questions
	  document.getElementById("q_2").style.display = "none";
      document.getElementById("q_3").style.display = "none";
	  
	  //set display to hide other answers
	  document.getElementById("a_2").style.display = "none";
  	  document.getElementById("a_3").style.display = "none";
	  
	  //set display to show question and answer
	  document.getElementById("q_1").style.display = "block";
	  document.getElementById("a_1").style.display = "block";
	}
	else if(ans_num==2)
	{
	  //set display to hide other questions
	  document.getElementById("q_1").style.display = "none";
      document.getElementById("q_3").style.display = "none";
	  
	  //set display to hide other answers
	  document.getElementById("a_1").style.display = "none";
  	  document.getElementById("a_3").style.display = "none";
	  
	  //set display to show question and answer
	  document.getElementById("q_2").style.display = "block";
	  document.getElementById("a_2").style.display = "block";
	}
	else if (ans_num==3)
	{
	  //set display to hide other questions
	  document.getElementById("q_1").style.display = "none";
      document.getElementById("q_2").style.display = "none";
	  
	  //set display to hide other answers
	  document.getElementById("a_1").style.display = "none";
  	  document.getElementById("a_2").style.display = "none";
	  
	  //set display to show question and answer
	  document.getElementById("q_3").style.display = "block";
	  document.getElementById("a_3").style.display = "block";
	}
	else
	{
	  //Reset to list of questions
	  document.getElementById("q_1").style.display = "block";
	  document.getElementById("q_2").style.display = "block";
	  document.getElementById("q_3").style.display = "block";
	  //Hide all answers
	  document.getElementById("a_1").style.display = "none";
	  document.getElementById("a_2").style.display = "none";
	  document.getElementById("a_3").style.display = "none";
	}
  }