function createXMLHttpRequest()
{
	if(window.XMLHttpRequest)
	{
		return new XMLHttpRequest();
	}
	try
	{
		return new ActiveXObject("MSXML2.XMLHTTP.4.0");
	}
	catch(e)
	{
		try
		{
			return new ActiveXObject("MSXML2.XMLHTTP.3.0");
		}
		catch(e)
		{
			try
			{
				return new ActiveXObject("MSMXL2.XMLHTTP.2.6");
			}
			catch(e)
			{
				try
				{
					return new ActiveXObject("MSXML2.XMLHTTP");
				}
				catch(e)
				{
					try
					{
						return new ActiveXObject("Microsoft.XMLHTTP");
					}
					catch(e)
					{
						return null;
					}
				}
			}
		}
	}
}