var xmlHttp;

var ajaxCommentSpanId;
var ajaxRaterSpanId;


// *** comments ***
function ajaxGetXmlHttpObject()
{
	var xmlHttp=null;
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}

function ajaxComments(commentId, commentSpanId, whatToUpdate)
{
	//	whatToUpdate = 1 = thumbsUp, 2 = thumbsDown, 3 = alert

	ajaxCommentSpanId = commentSpanId;

	xmlHttp = ajaxGetXmlHttpObject();
	if (xmlHttp == null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}
	
	var url="/ajax/CommentUpdates.aspx";
	url = url + "?cID=" + commentId;
	url = url + "&what=" + whatToUpdate;
	
	xmlHttp.onreadystatechange = ajaxCommentsStateChanged;
	xmlHttp.open("GET", url, true);
	
	xmlHttp.send(null);
} 

function ajaxCommentsStateChanged() 
{ 
	if (xmlHttp.readyState == 4)
	{
		//alert(xmlHttp.responseText);
		document.getElementById(ajaxCommentSpanId).innerHTML = "Thank you for your action";
	}
}

// ***** rater *****

function ajaxRater(what, itemId, raterSpanId, userGrade){

	ajaxRaterSpanId = raterSpanId;

	xmlHttp = ajaxGetXmlHttpObject();
	if (xmlHttp == null)
	{
		alert ("Your browser does not support AJAX!");
		return;
	}
	
	var url="/ajax/RaterUpdates.aspx";
	url = url + "?what=" + what;
	url = url + "&id=" + itemId;
	url = url + "&grade=" + userGrade;
	
	xmlHttp.onreadystatechange = ajaxRaterStateChanged;
	xmlHttp.open("GET", url, true);
	
	xmlHttp.send(null);
}

function ajaxRaterStateChanged() 
{ 
	if (xmlHttp.readyState == 4)
	{
		//alert(xmlHttp.responseText);
		document.getElementById(ajaxRaterSpanId).innerHTML = "<i>Thank you for your vote</i>";
	}
}