function hidealltabs() {
  var q = document.getElementById('questions');
  if(q.firstChild) {
   var c = q.firstChild;
   while(c) {
     if(c.nodeType==1) {
     p = c.getElementsByTagName('div');
     p[0].style.display = 'none';
     }
     c = c.nextSibling;
   }
  }
}

function toggle(question) {
  var q = document.getElementById(question);
  p = q.getElementsByTagName('div');
  with (p[0].style) {
    if (display == 'block' || display == '') {
      display = 'none';
    }
    else {
    hidealltabs();
      display = 'block';
    }
  }

}

addLoadEvent(hidealltabs)