function showlayer(layer){

var Layers=document.getElementsByTagName("div");
for(i=0;i<Layers.length;i++){
    if(Layers.getAttribute("class")=="hiddenbox"){
    Layers.style.display="none";
    }
}
document.getElementById(layer).style.display="block";
}


function toggleArrows (e) {
  var src = e.target || e.srcElement;

  if (src.nodeName.toUpperCase() == 'UL')
     return true;
  
  var ul = MT.util.findDefiningParent(src);
  var li = src.nodeName.toUpperCase() == 'A' ? src.parentNode : src;

  var lis = ul.getElementsByTagName('LI');
  for (var l = 0; l < lis.length; l++)
     lis[l].className = '';

  li.className = 'selected';
}


/* ---------------------------- */
/* SHOW-HIDE Layer*/
/* ---------------------------- 
function showlayer(layer){
var myLayer=document.getElementById(layer).style.display;
if(myLayer=="none"){
document.getElementById(layer).style.display="block";
} else { 
document.getElementById(layer).style.display="none";
}
}
*/

/*
function HideContent(d) {
if(d.length < 1) { return; }
document.getElementById(d).style.display = "none";
}
function ShowContent(d) {
if(d.length < 1) { return; }
document.getElementById(d).style.display = "block";
}
function ReverseContentDisplay(d) {
if(d.length < 1) { return; }
if(document.getElementById(d).style.display == "none") { document.getElementById(d).style.display = "block"; }
else { document.getElementById(d).style.display = "none"; }
}
*/