startList = function() {
  navRoot = document.getElementById("header-buttons");
  for (i=0; i<navRoot.childNodes.length; i++) {
    node = navRoot.childNodes[i];
    if (node.nodeName=="A") {
      node = node.firstChild;
    }
    if (node && node.className=="header-button" &&node.firstChild.className=="mdown") {
      node.onmouseover=function() {
        this.firstChild.className="mdown over";
        this.style.zIndex=37;
      	var selects = document.getElementsByTagName('select');
      	for(i=0;i<selects.length;i++) selects[i].style.visibility='hidden';
      }
      node.onmouseout=function() {
        this.firstChild.className="mdown";
        this.style = '';
      	var selects = document.getElementsByTagName('select');
      	for(i=0;i<selects.length;i++) selects[i].style.visibility='visible';      }
    }
  }
}
startList();