/* Browser Compatability function. It returns the correct XMLHttpRequest depending on the current browser. */
function createRequestObject()
{
/* Initialising the variable xmlhttp */
	var xmlhttp=false;
	
/* Try and catch block for creating xmlhttp object according to the browser */
	try
	{
	/* The xmlhttp object is built into the Microsoft XML Parser. */
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch (e)
	{
		try 
		{
		/* The xmlhttp object is built into the Microsoft IE. */
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		} 
		catch (E) 
		{
			xmlhttp = false;
		}
	}
/* The xmlhttp object is built into the browsers other than Microsoft IE. */
	if (!xmlhttp && typeof XMLHttpRequest!='undefined')
	{
		xmlhttp = new XMLHttpRequest();
	}
	return xmlhttp;
}

var response;
var duplFlag = false;