function SaveAdd()
		  {
		   var str = document.getElementById("txtAdd").value;
		   var ex = /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.([a-z]|[A-Z]){2,}$/;
		   if(str.length == 0)
		   {
		     alert("Please input a valid Email address.");
		     return;
		   }
		   if(str == "you@example.com")
		   {
		      alert("Please input a valid Email address.");
		      return;
		   }
		   if(ex.test(str))
		   {
		     location.href = "mail.aspx?add="+str;
		   }
		   else
		   {
		      alert("Please input a valid Email address.");
		   }
		  }
		  
		  function ChangeLayer(index)
		  {		   
		     if(index==1)
		     {
		       document.getElementById("Layer1").style.display = "";
		       document.getElementById("Layer2").style.display = "none";
		       document.getElementById("Layer3").style.display = "none";
		     }
		     else if(index == 2)
		     {
		       document.getElementById("Layer1").style.display = "none";
		       document.getElementById("Layer2").style.display = "";
		       document.getElementById("Layer3").style.display = "none";
		     }
		     else if(index ==3)
		     {
		       document.getElementById("Layer1").style.display = "none";
		       document.getElementById("Layer2").style.display = "none";
		       document.getElementById("Layer3").style.display = "";
		     }
		  }