function createRequest()
{
	var request = null;
	try
	{
		request = new XMLHttpRequest();
	}
	catch( trymicrosft )
	{
		try
		{
			request = new ActiveXObject("Msxm12.XMLHTTP");
		}
		catch( othermicrosoft )
		{
			try
			{
				request = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch( failed )
			{
				request = null;
			}
		}
	}
	
	if( request == null )
		alert("Error creating request object!");
	else
		return request;
}