// from a comment by Steven Bristol on errtheblog.com

I just wanted to share a really killer event handling tidbit:

Generally you do something like:

jQuery(’.class’).click(function(){//whatever});

Everyone knows this can be rewritten as:

jQuery(’.class’).bind(‘click’, function(){//whatever});

But sometimes you need to unbind something:

jQuery(’.class’).unbind(‘click’, function(){//});

The problem with this is that it will unbind all the click events, not just yours. So if multiple bits of javascript have a click event handler for ’.class’, unbinding removes them all. (This is because there is no way to identify an anonymous function.)

But jQuery is so good that there is a way to handle this: Namespacing your events:

jQuery(’.class’).bind(‘click.namespace’, function(){//}); 
jQuery(’.class’).unbind(‘click.namespace’);

or for reinitializing an element added via ajax:

jQuery(’.class’)unbind(‘click.namespace’).bind(‘click.namespace’, function(){//});

http://particletree.com/notebook/finding-element-positions/

// http://www.sitepoint.com/blogs/2007/07/11/insert-in-place-without-documentwrite/

// So, given a syndication script with a fixed ID:
<script type="text/javascript" id="syndication" src="syndication.js">script> 

// We can go from oldskool nastiness like this:
document.write('
Here is some syndicated content.'); 

// To modern loveliness like this:

var newcontent = document.createElement('p'); 
newcontent.id = 'syndicated-content'; 
newcontent.appendChild(document.createTextNode('Here is some syndicated content.')); 
var scr = document.getElementById('syndication'); 
scr.parentNode.insertBefore(newcontent, scr); 

// We could even go a step further and remove the <script> ID, but in that case we would need a concrete method for identifying the specific element. We could do that by knowing its SRC:

var scripts = document.getElementsByTagName('script'); 
for(var i=0; i<scripts.length; i++) 
{ 
  if(scripts[i].src == 'http://www.mydomain.com/syndication.js') 
  { 
    //scripts[i] is the one 
    break; 
  } 
}

This gives you a new event (onDOMReady).

Object.extend(Event, {
  _domReady : function() {
    if (arguments.callee.done) return;
    arguments.callee.done = true;

    if (this._timer)  clearInterval(this._timer);
    
    this._readyCallbacks.each(function(f) { f() });
    this._readyCallbacks = null;
},
  onDOMReady : function(f) {
    if (!this._readyCallbacks) {
      var domReady = this._domReady.bind(this);
      
      if (document.addEventListener)
        document.addEventListener("DOMContentLoaded", domReady, false);
        
        /*@cc_on @*/
        /*@if (@_win32)
            document.write("