function displayLayer(show,hide){
	if(document.getElementById){
	  document.getElementById(show).style.visibility = "visible";
	  document.getElementById(hide).style.visibility = "visible";
	  document.getElementById(show).style.display = "inline";
	  document.getElementById(hide).style.display = "none";
	  
	  register_active = show + "_register";
	  register_normal = hide + "_register";
	  
	  if(document.getElementById(register_active).className.search(/_active/)<0)
	    document.getElementById(register_active).className = document.getElementById(register_active).className + "_active";
	  document.getElementById(register_normal).className = document.getElementById(register_normal).className.replace(/_active/,"");
	  
	  document.getElementById("register1").className = "register_link";
	  document.getElementById("register2").className = "register_link";
	  document.getElementById("register3").className = "register_link";
	  document.getElementById("register4").className = "register_link";
	  
	}
}