// JavaScript Document
function selectLayer1(i)
{
 switch(i)
 {
 case 1:
document.getElementById("boxP").style.display="block";
document.getElementById("boxM").style.display="none";
document.getElementById("tagP").className="tag1";
document.getElementById("tagM").className="tag2";

 break;
case 2:
document.getElementById("boxP").style.display="none";
document.getElementById("boxM").style.display="block";
document.getElementById("tagP").className="tag2";
document.getElementById("tagM").className="tag1";

 break;
case 3:
document.getElementById("boxS").style.display="block";
document.getElementById("boxZ").style.display="none";
document.getElementById("tagS").className="tag3";
document.getElementById("tagZ").className="tag4";

 break;
 case 4:
document.getElementById("boxS").style.display="none";
document.getElementById("boxZ").style.display="block";
document.getElementById("tagS").className="tag4";
document.getElementById("tagZ").className="tag3";
 break;

 }
}