//Javascript Document

function GetXMLHttpObject()
{
	var xmlHttp;
	try
	{
		//Firefox, Opera 8.0+, Safari
		xmlHttp= new XMLHttpRequest();
	}
	catch(e)
	{
		//Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e)
		{
			try
			{
				xmlHttp= new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e)
			{
				alert("Your browswer does not support AJAX!");
				return null;
			}
		}
	}
	return xmlHttp;
}

function loadNavLinks()
{
	if(xmlHttp.readyState == 4)
	{
		if(xmlHttp.status == 200)
			document.getElementById("col1").innerHTML=xmlHttp.responseText;
	}
}

function onPageLoad()
{
	//get nav links on page
	xmlHttp = GetXMLHttpObject();
	if(xmlHttp != null)
	{
		xmlHttp.onreadystatechange = loadNavLinks;
		xmlHttp.open("GET", "nav.html", true);
		xmlHttp.send(null);
	}
	
}

window.onload = onPageLoad;