if (isJsEnabled()) {
  addLoadEvent(collapseAutoAttach);
}

function collapseAutoAttach() {
  var fieldsets = document.getElementsByTagName('fieldset');
  var legend, fieldset;
  for (var i = 0; fieldset = fieldsets[i]; i++) {
    if (!hasClass(fieldset, 'collapsible')) {
      continue;
    }
    legend = fieldset.getElementsByTagName('legend');
    if (legend.length == 0) {
      continue;
    }
    legend = legend[0];
    var a = document.createElement('a');
    a.href = '#';
    a.id='fieldset'+i;

    a.onclick = function() {
      toggleClass(this.parentNode.parentNode, 'collapsed');
      res=hasClass(this.parentNode.parentNode, 'collapsed')?'':1;
      collapseSetPersistent(this.id, res);
      this.blur();
      return false;
    };

    a.innerHTML=legend.innerHTML;

    while (legend.hasChildNodes()) {
      removeNode(legend.childNodes[0]);
    }
    legend.appendChild(a);
    collapseEnsureErrorsVisible(fieldset,i);
  }
}

function collapseEnsureErrorsVisible(fieldset,cnt) {
  if (!hasClass(fieldset, 'collapsed')) {
    return;
  }
  var inputs = [];
  inputs = inputs.concat(fieldset.getElementsByTagName('input'));
  inputs = inputs.concat(fieldset.getElementsByTagName('textarea'));
  inputs = inputs.concat(fieldset.getElementsByTagName('select'));
  for (var j = 0; j<3; j++) {
    for (var i = 0; i < inputs[j].length; i++) {
      if (hasClass(inputs[j][i], 'error')) {
        return removeClass(fieldset, 'collapsed');
      }
    }
  }
  if(collapseGetPersistent('fieldset'+cnt)){
	return removeClass(fieldset, 'collapsed');
  }
}

function collapseSetPersistent(name, value, expires){
	document.cookie= name + "=" + escape(value) +
	((expires) ? "; expires=" + expires.toGMTString() : "") +
	("; path=" + window.location.pathname);
}

function collapseGetPersistent(name){
	var dc = document.cookie;
	var prefix = name + "=";
	var begin = dc.indexOf("; " + prefix);
	if (begin == -1){
		begin = dc.indexOf(prefix);
		if (begin != 0) return null;
	}else{
		begin += 2;
	}
	var end = document.cookie.indexOf(";", begin);
	if (end == -1){
		end = dc.length;
	}
	return unescape(dc.substring(begin + prefix.length, end));
}