DOMContentLoaded Sample Page

alert log

large image

Screenshots from www.browsershots.org

Windows

MSIE 5.01
Windows XP

MSIE 5.5
Windows 2000

MSIE 6.0
Windows 2000

MSIE 7.0
Windows XP

MSIE 8.0
Windows XP

Navigator 9.0.0.5
Windows 2000

SeaMonkey 1.1.7
Windows XP

Firefox 1.5
Windows 2000

Firefox 2.0.0.4
Windows 2000

Firefox 3.0
Windows XP

Flock 1.0.8
Windows 2000

Opera 9.26
Windows XP

K-Meleon 1.1.4
Windows 2000

Safari 3.0
Windows XP

Chrome 0.2
Windows XP

also tested Opera 7.23, 8.10, 9.23, 9.24, 9.25; Navigator 4.6, 4.75, 7.0, 8.0

Mac OS

Safari 1.3.2
Mac OS X 10.3

Safari 2.0.4
Mac OS X 10.4

Safari 3.0.4
Mac OS X 10.5

Firefox 2.0.0.6
Mac OS X 10.4

Firefox 3.0
Mac OS X 10.5

Linux

SeaMonkey 1.1.8
Ubuntu 8.04 LTS

Mozilla 1.7.8
Debian 3.1

Firefox 3.0
Ubuntu 7.10

Konqueror 3.3
Debian 3.1

Konqueror 3.5
Ubuntu 6.06 LTS

Navigator 9.0.0.5
Ubuntu 7.04

Opera 9.50
Ubuntu 7.10

Galeon 2.0.2
Ubuntu 8.04 LTS

Epiphany 2.20
Ubuntu 7.10

Kazehakase 0.5.1
PLD 3.0

also tested SeaMonkey 2.0a1pre; Firefox 1.0.4, 1.5.0.13pre, 2.0.0.11; Opera 9.25, 9.26; Galeon 1.3.20; Epiphany 2.18; Iceweasel 2.0.0.3; GranParadiso 3.0; Iceape 1.1.5; Kazehakase 0.2.7, 0.4.3; BonEcho 2.0.0.12; Flock 1.0.9; Minefield 3.0b4pre; Epiphany 2.14.3

BSD

SeaMonkey 1.1.7
FreeBSD 6.3

Opera 9.25
FreeBSD 6.3

Epiphany 2.20
FreeBSD 6.3

Galeon 2.0.4
FreeBSD 6.3

YOU MAY USE THIS COMPAKT CODE OF addEvent, ...

... but if you interested in detailed comments, you will find them in the source code of this document.

// thanks!:) original from http://dean.edwards.name/weblog/2005/10/add-event/
// with input from Tino Zijdel, Matthias Miller, Diego Perini, Tanny O'Haley, Hedger Wang
// Author: Dr. Dirk Fischer, Köln/Cologne, Germany : Tested with www.browsershots.org : thanks!
// Version 1.2
function addEvent(o,t,h){
var s=/chrome/i.test(navigator.userAgent)?false:window.execScript?1
:/WebKit|Khtml/i.test(navigator.userAgent)||window.opera&&!window.getSelection?2
:document.addEventListener?false:1,
d="domcontentloaded";

   if (!o)return false;
   if (o.addEventListener&&!(s&&t.toLowerCase()==d))o.addEventListener(t,h,false);
   else{
      t=t.toLowerCase();
      if (t==d||(t=='load'&&(!o.nodeType||o.nodeType==9))){o=s==2?document:window;
         if (addEvent.waitDOM==-1){addEvent.waitDOM=s;DOMloadWait();
            document.write('body{background-image:url(null);}');}}
      if (!h.$$guid)h.$$guid=addEvent.guid++;
      if (!o.evs)o.evs={};
      var hs=o.evs[t];
      if (!hs){hs=o.evs[t]={};if (o['on'+t])hs[0]=o['on'+t];}
      hs[h.$$guid]=h;o['on'+t]=handleEvent;
   }
   function DOMloadWait(){
      (function(){
      if (addEvent.waitDOM>0){var b=document.body;
         if (b){var o=addEvent.waitDOM==2?document:window,
            d="domcontentloaded";addEvent.waitDOM=0;
            if (b.onload){addEvent(window,'load',b.onload);
               if (o===document)b.onload=null;
               o.onload=handleEvent;}
            (o["on"+d])({"type":d});
            o=document.getElementById("JustForLoad");o.parentNode.removeChild(o);}
         else setTimeout(arguments.callee,10);
      }})();}
}
addEvent.guid=1;
addEvent.waitDOM=-1;
function removeEvent(o,t,h){
   if (o.removeEventListener)o.removeEventListener(t,h,false);
   else if (o.evs&&o.evs[t]&&h.$$guid)delete o.evs[t][h.$$guid];
}
function handleEvent(ev){var r=true;
   ev = ev||fixEvent(((this.ownerDocument || this.document || this).parentWindow || window).event);
   var hs=this.evs[ev.type];
   for(var i in hs){
      this.$$h=hs[i];
      if(this.$$h(ev) === false)r=false;
   }
   if (this.$$h)this.$$h=null;
   return r;
}
function fixEvent(ev){
   if (ev){ev.preventDefault=fixEvent.preventDefault;ev.stopPropagation=fixEvent.stopPropagation;}
   return ev;}
fixEvent.preventDefault=function(){this.returnValue=false;}
fixEvent.stopPropagation=function(){this.cancelBubble=true;}

Footer: thank's Tanny O'Haley for the base of this test site