var xmlHttp;
var host_name=window.location.hostname;
var baseurl = 'http://'+host_name+'/comment';	

function GetXmlHttpObject()
{ 
	var objXMLHttp=null
	if (window.XMLHttpRequest)
	{
		objXMLHttp=new XMLHttpRequest()
	}
	else if (window.ActiveXObject)
	{
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
	}
	return objXMLHttp
} 

function validateFrm(frm)
{
	var erMsg = "";
	if(frm.name.value == "")
		erMsg = "Name";

	if(frm.email.value == "" )
		erMsg = "Email";
	
	if(frm.comment.value == "")
		erMsg = "Comments";

	if(erMsg != "")
	{
		erMsg = "Name, Email and Comments Should Not Be Empty.";
		document.getElementById("errorMsg").innerHTML = erMsg;
		return false;
	}
	url ="?cname="+frm.name.value+"&cmail="+frm.email.value+"&cmt="+frm.comment.value+"&ins_C=Ins";
	loadComments(url);
}

function loadComments (surl)
{
	
	url = baseurl+"/loadcomments.php"+surl;
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return false;
	}
	xmlHttp.onreadystatechange=updateComments; 
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
	return false;
}

function updateComments()
{
	if (xmlHttp.readyState == 4)
	{ // Complete
		if (xmlHttp.status == 200)
		{ // OK response
			document.getElementById("ListComments").innerHTML=xmlHttp.responseText;
		}
		else
		{
			alert("Problem: " + xmlHttp.statusText);
		}
    }
}