Mine

		if (msgrequest.handler.readyState == 4 && msgrequest.handler.status == 200 && msgrequest.handler.responseText);
		{

			document.getElementById('htmlwritein').innerHTML = msgrequest.handler.responseText;

			document.getElementById('ChatDisplay').innerHTML = document.getElementById('ChatPage').innerHTML;
			document.getElementById('UserDisplay').innerHTML = document.getElementById('ChatUPage').innerHTML;
			document.getElementById('total_users').innerHTML = document.getElementById('ChatNUsers').innerHTML;
			setTimeout('requestmsgs()', 2000);
			document.getElementById('ChatDisplay').scrollTop = 99999;
		}



error related sites:
http://www.thescripts.com/forum/thread435066.html
http://www.google.nl/search?q=ajax+system+error+1072896658&hl=nl&start=10&sa=N