function initAjax()
{
	if (window.XMLHttpRequest)
	{
		try { httpRequest = new XMLHttpRequest();	}
		catch(e) { httpRequest = false; }
	}
	else if (window.ActiveXObject)
	{
		try { httpRequest = new ActiveXObject("Msxml2.XMLHTTP"); }
		catch (e)
		{
			try { httpRequest = new ActiveXObject("Microsoft.XMLHTTP"); }
			catch (e) {	httpRequest = false; }
		}
	}
	else
		httpRequest = false;

	return httpRequest;
}