// global xmlhttprequest object
var xmlHttp = new Array();
/**
 * instantiates a new xmlhttprequest object
 *
 * @return xmlhttprequest object or false
 */
	function getXMLRequester( )
{
    var xmlHttp = false;
            
    // try to create a new instance of the xmlhttprequest object        
    try
    {
        // Internet Explorer
        if( window.ActiveXObject )
        {
            for( var i = 5; i; i-- )
            {
                try
                {
                    // loading of a newer version of msxml dll (msxml3 - msxml5) failed
                    // use fallback solution
                    // old style msxml version independent, deprecated
                    if( i == 2 )
                    {
                        xmlHttp = new ActiveXObject( "Microsoft.XMLHTTP" );    
                    }
                    // try to use the latest msxml dll
                    else
                    {
                        
                        xmlHttp = new ActiveXObject( "Msxml2.XMLHTTP." + i + ".0" );
                    }
                    break;
                }
                catch( excNotLoadable )
                {                        
                    xmlHttp = false;
                }
            }
        }
        // Mozilla, Opera und Safari
        else if( window.XMLHttpRequest )
        {
            xmlHttp = new XMLHttpRequest();
        }
    }
    // loading of xmlhttp object failed
    catch( excNotLoadable )
    {
        xmlHttp = false;
    }
    return xmlHttp ;
}