$(document).ready(function(){
  $(".submenu a").click(function(){
	$(".submenu a").removeClass("sel");															 
	$(this).addClass("sel");
  });
  
});

function showcolumn(elemId) {
  document.getElementById("alltpl").style.display = "none";
  document.getElementById("lefttpl").style.display = "none";
  document.getElementById("righttpl").style.display = "none";
  document.getElementById("singletpl").style.display = "none";
  document.getElementById(elemId).style.display = "block";
}