//============================================================
//
// Boites deroulantes
// borrowed from Wikipedia.fr
//============================================================
 // BEGIN Dynamic Navigation Bars (experimantal)
 
 // set up the words in your language
 var NavigationBarHide = '[ Cacher ]';
 var NavigationBarShow = '[ Voir ]';
 
 // set up max count of Navigation Bars on page,
 // if there are more, all will be hidden
 // NavigationBarShowDefault = 0; // all bars will be hidden
 // NavigationBarShowDefault = 1; // on pages with more than 1 bar all bars will be hidden
 var NavigationBarShowDefault = 0;
 
 
 // shows and hides content and picture (if available) of navigation bars
 // Parameters:
 //     indexNavigationBar: the index of navigation bar to be toggled
 function toggleNavigationBar(indexNavigationBar)
{
   var NavToggle = document.getElementById("NavToggle" + indexNavigationBar);
   var NavFrame = document.getElementById("NavFrame" + indexNavigationBar);

   if (!NavFrame || !NavToggle) {
       return false;
   }

   // if shown now
   if (NavToggle.firstChild.data == NavigationBarHide) {
       for (
               var NavChild = NavFrame.firstChild;
               NavChild != null;
               NavChild = NavChild.nextSibling
           ) {
           if (NavChild.className == 'NavPic') {
               NavChild.style.display = 'none';
           }
           if (NavChild.className == 'NavContent') {
               NavChild.style.display = 'none';
           }
           if (NavChild.className == 'NavToggle') {
               NavChild.firstChild.data = NavigationBarShow;
           }
       }

   // if hidden now
   } else if (NavToggle.firstChild.data == NavigationBarShow) {
       for (
               var NavChild = NavFrame.firstChild;
               NavChild != null;
               NavChild = NavChild.nextSibling
           ) {
           if (NavChild.className == 'NavPic') {
               NavChild.style.display = 'block';
           }
           if (NavChild.className == 'NavContent') {
               NavChild.style.display = 'block';
           }
           if (NavChild.className == 'NavToggle') {
               NavChild.firstChild.data = NavigationBarHide;
           }
       }
   }
}

// adds show/hide-button to navigation bars
function createNavigationBarToggleButton()
{
   var indexNavigationBar = 0;
   // iterate over all < div >-elements
   for(
           var i=0; 
           NavFrame = document.getElementsByTagName("div")[i]; 
           i++
       ) {
       // if found a navigation bar
       if (NavFrame.className == "NavFrame") {

           indexNavigationBar++;
           var NavToggle = document.createElement("a");
           NavToggle.className = 'NavToggle';
           NavToggle.setAttribute('id', 'NavToggle' + indexNavigationBar);
           NavToggle.setAttribute('href', 'javascript:toggleNavigationBar(' + indexNavigationBar + ');');

           var NavToggleText = document.createTextNode(NavigationBarHide);
           NavToggle.appendChild(NavToggleText);

           // add NavToggle-Button as first div-element 
           // in < div class="NavFrame" >
           NavFrame.insertBefore(
               NavToggle,
               NavFrame.firstChild
           );
           NavFrame.setAttribute('id', 'NavFrame' + indexNavigationBar);
       }
   }
   // if more Navigation Bars found than Default: hide all
   if (NavigationBarShowDefault < indexNavigationBar) {
       for(
               var i=1; 
               i<=indexNavigationBar; 
               i++
       ) {
           toggleNavigationBar(i);
       }
   }

}
 
 //addLoadEvent(createNavigationBarToggleButton);
 
 // END Dynamic Navigation Bars