var objXmlHttp;

function GetXmlHttpObject(handler)
{
	objXmlHttp = null;

	if (navigator.userAgent.indexOf("Opera")>=0)
	{
//		alert("This example doesn't work in Opera") 
//		return 
		objXmlHttp = XMLHttpRequest()
		return objXmlHttp
	}
	if (navigator.userAgent.indexOf("MSIE")>=0)
	{ 
		var strName="Msxml2.XMLHTTP"
		if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
		{
			strName="Microsoft.XMLHTTP"
		} 
		try
		{ 
			objXmlHttp=new ActiveXObject(strName)

			return objXmlHttp
		} 
		catch(e)
		{ 
			alert("Error. Scripting for ActiveX might be disabled") 
			return 
		} 
	} 
	if (navigator.userAgent.indexOf("Mozilla")>=0)
	{
		objXmlHttp=new XMLHttpRequest()
		return objXmlHttp
	}
} 

function loadPage(url,div){

	var ajaxObj = GetXmlHttpObject();
	var conteudo = document.getElementById(div);

	conteudo.innerHTML="<h2>...</h2>";

	ajaxObj.onreadystatechange = function() {
		if(ajaxObj.readyState == 4 || ajaxObj.readyState=="complete") {
			conteudo.innerHTML=ajaxObj.responseText;
			if(ajaxObj.status!=200)
				conteudo.innerHTML="<h2 align=\"center\">Error "+ ajaxObj.status +".</h2>";
		}
	}
	ajaxObj.open("GET",url);
	ajaxObj.send(null);
}


function showlink(url){
	var conteudo = document.getElementById("link");
	conteudo.innerHTML="<p><a href=\""+url+"\">Return to previous page</a></p><p>&nbsp;</p>";
}