function getRequest()
{
	var request = null;
	try 
	{
		request = new XMLHttpRequest();
	} 
	catch (trymicrosoft) 
	{
		try 
		{
			request = new ActiveXObject("Msxml2.XMLHTTP");
		} 
		catch (othermicrosoft) 
		{
			try 
			{
				request = new ActiveXObject("Microsoft.XMLHTTP");
			} 
			catch (failed) 
			{
				request = null;
			}
		}
	}
	if (request == null)
	{
		alert("Error creating request object!");
	}
	else
	{
		return request;
	}
}