/**
 * 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 ;
}

function sendopenclose(section, opened)
{
	var xmlHttp = getXMLRequester();

	if(xmlHttp!=null)
	{
		// open the connection 
		xmlHttp.open( 'GET', 'openclose.php?section='+section+'&opened='+opened, true );
        
		// send request to server
		xmlHttp.send( null );    // param = POST data
	}
}