var xmlHttp
var trgtDiv
function GetData(pg,str,trgt){
	document.getElementById(trgt).innerHTML="<img src=images/ajax-loader.gif />"
	showData(pg,str,trgt)
}
function showData(pg,str,trgt)
{ 
trgtDiv=trgt

var url=pg + str
xmlHttp=GetXmlHttpObject(stateChanged)
xmlHttp.open("GET", url , true)
xmlHttp.send(null)
} 
function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{ 
document.getElementById(trgtDiv).innerHTML=xmlHttp.responseText
}
}
function GetXmlHttpObject(handler)
	{
	var objXmlHttp=null
	if (navigator.userAgent.indexOf("Opera")>=0)
	{
		alert("This doesn't work in Opera") 
		return 
	}
	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)
	objXmlHttp.onreadystatechange=handler 
	return objXmlHttp
	} 
	catch(e)
	{ 
	alert("Error. Scripting for ActiveX might be disabled") 
	return 
	} 
	} 
	if (navigator.userAgent.indexOf("Mozilla")>=0)
	{
	objXmlHttp=new XMLHttpRequest()
	objXmlHttp.onload=handler
	objXmlHttp.onerror=handler 
	return objXmlHttp
	}
} 
function showSurvey(){
	document.getElementById("surveyBox").style.visibility="visible";
	GetData('survey.php','','surveyBox');
}
function hideSurvey(){
	document.getElementById("surveyBox").innerHTML="";
	document.getElementById("surveyBox").style.visibility="hidden";
}