[elitis]

Originally Posted by AndrewGSW

execCommand was originally IE only and may not be available in other browsers.

As mentioned in a previous post, your code that uses getElementById should not run until after the page has loaded and the elements are available to be referred to.

I've checked it in IE9, Chrome (23 I think), and Firefox 18.01. It doesn't work in ANY of them. But like I said before it works fine in all browsers if I use an inline onclick event handler.
Updated code: (NOTE: I am not using jQuery.)

if (window.addEventListener){window.addEventListener('load',iFrameOn,false);}
else if (document.addEventListener) { 
	document.addEventListener('load',iFrameOn,false);
	$('bold').addEventListener('click',iBold,false);
	$('underLine').addEventListener('click',iUnderline,false);
	$('italic').addEventListener('click',iItalic,false);
	$('fontColor').addEventListener('click',iForeColor,false);
	$('ul').addEventListener('click',iUnorderedList,false);
	$('ol').addEventListener('click',iOrderedList,false);
	$('img').addEventListener('click',iImage,false);
	$('deny').addEventListener('click',denyFR,false);
	$('accept').addEventListener('click',acceptFR,false);
	$('sbmt').addEventListener('click',sendData,false);
}
else if (document.attachEvent){document.attachEvent('onload',iFrameOn,false);}

function $(element){document.getElementById(element);}
function iFrameOn(){richTextField.document.designMode = 'On';}
function iBold(){richTextField.document.execCommand('bold',false,null);}
function iUnderline(){richTextField.document.execCommand('underline',false,null);}