function initOverLabels () {
  if (!document.getElementById) return;      

  var labels, id, field;

  // Set focus and blur handlers to hide and show 
  // LABELs with 'overlabel' class names.
  labels = document.getElementsByTagName('label');
  for (var i = 0; i < labels.length; i++) {

    if (labels[i].className == 'overlabel') {

      // Skip labels that do not have a named association
      // with another field.
      id = labels[i].htmlFor || labels[i].getAttribute ('for');
      if (!id || !(field = document.getElementById(id))) {
        continue;
      } 

      // Hide any fields having an initial value.
      if (field.value !== '') {
        hideLabel(field.getAttribute('id'), true);
      }

      // Set handlers to show and hide labels.
      field.onfocus = function () {
        hideLabel(this.getAttribute('id'), true);
      };
      field.onblur = function () {
        if (this.value === '') {
          hideLabel(this.getAttribute('id'), false);
        }
      };

      // Handle clicks to LABEL elements (for Safari).
      labels[i].onclick = function () {
        var id, field;
        id = this.getAttribute('for');
        if (id && (field = document.getElementById(id))) {
          field.focus();
        }
      };

    }
  }
};

function hideLabel (field_id, hide) {
  var field_for;
  var labels = document.getElementsByTagName('label');
  for (var i = 0; i < labels.length; i++) {
    field_for = labels[i].htmlFor || labels[i]. getAttribute('for');
    if (field_for == field_id) {
      labels[i].style.textIndent = (hide) ? '-1600px' : '0px';
      return true;
    }
  }
}


function toggle(obj) {
// Moz. or IE
var sibling=(obj.nextSibling.nodeType==3)? obj.nextSibling.nextSibling : obj.nextSibling;
// hide or show
if(sibling.style.display=='' || sibling.style.display=='block') {
	sibling.style.display='none';
    obj.firstChild.firstChild.data='+';
    }
else {
	sibling.style.display='block';
    obj.firstChild.firstChild.data='-';
    }
}
//
function initCollapse() {
var oDT=document.getElementById('content').getElementsByTagName('dt');
for (var i=0; i < oDT.length; i++) {
	oDT[i].onclick=function() {toggle(this)};
    var oSpan=document.createElement('span');
    var sign=document.createTextNode('+');
    oSpan.appendChild(sign);
    oDT[i].insertBefore(oSpan, oDT[i].firstChild);
    oSpan.style.fontFamily='monospace';
    oSpan.style.paddingRight='0.5em';
    oDT[i].style.cursor='pointer';
    toggle(oDT[i]);
	}
oDT=null;
}


// Created by: Simon Willison
// http://simon.incutio.com/archive/2004/05/26/addLoadEvent
function addLoadEvent(func) {
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
	//Nifty("ul#nav a","small transparent top");
	//DynarchMenu.setup('menu', { electric: 250 });
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(function() {
  setTimeout(initOverLabels, 50);
  //initCollapse();
});