function getXMLHttpRequestObject()
{
	var ajax = false;
	if(window.XMLHttpRequest)
	{
		ajax = new XMLHttpRequest();
		if(ajax.overrideMimeType)
		{
			ajax.overrideMimeType('text/html'); 	
		}
	}	
	else if(window.ActiveXObject)
	{
		try
		{
			ajax = new ActiveXObject("Msxml2.XMLHTTP");	
		}
		catch(e)
		{
			try
			{
				ajax = new ActiveXObject("Microsoft.XMLHTTP");	
			}
			catch(e)
			{}
		}	
	}
	return ajax;
}