var xmlhttp;
var h=0;
var url="news/news.xml";

function getNews()
{

	xmlhttp=GetXmlHttpObject();
	
	if(xmlhttp==null)
	{
		alert("Your browser does not support XMLHTTP!");
		return;
	}

	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET", "webitemimages/446/Images/news/news.xml", true);
	xmlhttp.send(null);
}

function getBooksNews()
{

	xmlhttp=GetXmlHttpObject();
	
	if(xmlhttp==null)
	{
		alert("Your browser does not support XMLHTTP!");
		return;
	}

	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET", "webitemimages/446/Images/news/booksnews.xml", true);
	xmlhttp.send(null);
}

function getCoursebooksNews()
{

	xmlhttp=GetXmlHttpObject();
	
	if(xmlhttp==null)
	{
		alert("Your browser does not support XMLHTTP!");
		return;
	}

	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET", "webitemimages/446/Images/news/coursebooksnews.xml", true);
	xmlhttp.send(null);
}

function getGradNews()
{

	xmlhttp=GetXmlHttpObject();
	
	if(xmlhttp==null)
	{
		alert("Your browser does not support XMLHTTP!");
		return;
	}

	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET", "webitemimages/446/Images/news/gradalumninews.xml", true);
	xmlhttp.send(null);
}

function getMedicalNews()
{

	xmlhttp=GetXmlHttpObject();
	
	if(xmlhttp==null)
	{
		alert("Your browser does not support XMLHTTP!");
		return;
	}

	xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET", "webitemimages/446/Images/news/medicalnews.xml", true);
	xmlhttp.send(null);
}


function stateChanged()
{
	if(xmlhttp.readyState==4)
	{
		var x = xmlhttp.responseXML.documentElement.getElementsByTagName("MSG");
		var txt = new Array();
		for(i=0;i<x.length;i++)
			txt[i] = x[i].firstChild.nodeValue;
			
			h++;
		
		document.getElementById("news").innerHTML=txt[h%x.length];
	}
}

function GetXmlHttpObject()
{
	if(window.XMLHttpRequest)
	{
		return new XMLHttpRequest();
	}

	if(window.ActiveXObject)
	{
		return new ActiveXObject("Microsoft.XMLHTTP");
	}

	return null;
}