function showSection(id) {
  var divs = document.getElementsByTagName("div");
  for (var i=0; i<divs.length; i++ ) {
	
    if (divs[i].className.indexOf("section") == -1) continue; /**/
    if (divs[i].getAttribute("id") != id) {
      divs[i].style.display = "none";
    } 
	else {
      divs[i].style.display = "block";
    }
  }
}



function prepareInternalnav() {
  if (!document.getElementsByTagName) return false;
  if (!document.getElementById) return false;
  if (!document.getElementById("nav_padding")) return false;
  
  var nav = document.getElementById("nav_padding");
  var links = nav.getElementsByTagName("a");
  
  for (var i=0; i<links.length; i++ ) {
  var sectionId = links[i].getAttribute("href").split("#")[1];
  
  if (!document.getElementById(sectionId)) continue;
	document.getElementById(sectionId).style.display = "none";
	document.getElementById("home").style.display = "block";
    links[i].destination = sectionId;
    links[i].onclick = function() { showSection(this.destination); return false; 
	}
    }
}



addLoadEvent(prepareInternalnav);