function createXMLHttpObject()
{   
	var xmlHttp;
	try
    {
	    // Firefox, Opera 8.0+, Safari
	    xmlHttp = new XMLHttpRequest();
    }
	catch (e)
    {
        // Internet Explorer
	    try
	    {
	      xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
	    }
	    catch (e)
	    {
	    	try
	        {
	        	xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	        }
	      	catch (e)
	        {
		        alert("Your browser does not support AJAX!");
		        return false;
	        }
	    }
    }
    
    if (xmlHttp.overrideMimeType) 
    {
      xmlHttp.overrideMimeType('text/xml');
    }
    return xmlHttp;
}