// JavaScript Document
/*
	Created By  : Gladwin George Peter
	Description : Ajax Functions
*/
/* --------------------------   AJAX FUNCTION STARTS HERE  -------------------------- */
/*
Return the id of the attribute.
*/
function $(id){return document.getElementById(id);}
//--------------------------------------------------------------------------------------------------//
//--------------------------------------------------------------------------------------------------//
/*
Return the xmlHttpObject
*/
function GetXmlHttpObject(handler)
{ 
	var objXmlHttp=null
	if (navigator.userAgent.indexOf("Opera")>=0)
	{
		//alert("Opera Is Not Supporting. Use Some Other Browsers") 
		//return
		objXmlHttp=new XMLHttpRequest();
		objXmlHttp.onload=handler;
		objXmlHttp.onerror=handler;
		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);
			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;
	}
}
//--------------------------------------------------------------------------------------------------//
/*
Send an ajax request to the url mentioned
URL 	   : SERVER SIDE SCRIPT NAME
PARAMETERS : URL parameters
callback   : callback function
requesttype: POST OR GET
async      : asycronous or synchronous, TRUE or FALSE
*/
function makeRequest(url,parameters,callback,requesttype,async)
{
	
	if(requesttype=='POST')
	{
		xmlHttp=GetXmlHttpObject(callback) 
		xmlHttp.open("POST",url,async);
		xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8");
		xmlHttp.send(parameters);
	}else if(requesttype=="GET")
	{
		url    = url+'?'+parameters;
		xmlHttp=GetXmlHttpObject(callback) 
		xmlHttp.open("GET", url , async) 
		xmlHttp.send(null) 
	}
}