function AjaxConnection()
{
	var xmlhttp;
	try 
	{
		// creating object of XMLHTTP in IE
		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch (e)
	{
		try
		{
			xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch (e)
		{
			try
			{
				// creating object of XMLHTTP in Mozilla and Safari 
				xmlhttp = new XMLHttpRequest();
			}
			catch (e)
			{
				xmlhttp = false;
			}
		}
	}
	if (!xmlhttp) return null;
	return xmlhttp;
}