//function toggleLayer( whichLayer ) {
function toggleLayer( sourceID, targetID, button ) {

  setButton(button);
  document.getElementById(targetID).innerHTML = document.getElementById(sourceID).innerHTML;

  if(targetID == 'fontancontent'){
    getfontantvBlocks();
    initScrollLayer();
  }
  toTop(document.getElementById(targetID).parentNode.id);
  heightInit();
}

function toggleNews( newClass, button ) {
  setButton(button);
  document.getElementById('newscontent').className = newClass;
  toTop(document.getElementById('newscontent').parentNode.id);
  heightInit();
    resetScrollButtons();
}


function setButton(button){
// unset 'active' id for all tabs
  var commonTabClass="tab";
  var activeTabClass="tabactive";

  if(typeof(button) != 'undefined' ){
   var tabsBlock=button.parentNode;
   var tabs = tabsBlock.getElementsByTagName("a");
       for (var h = 0; h < tabs.length; h++) {
         tabs[h].className = commonTabClass;
       }

   // Then set 'active' id for clicked tab
   button.className += " "+activeTabClass;
   button.blur();
  }
}