/******************************************
* komunikation mit den php scripten (AJAX)
******************************************/
window_array = new Array();
window_array[1] = new Array(1,0,0,0);
window_array[2] = new Array(2,0,0,0);
window_array[3] = new Array(3,0,0,0);
// ID - Status - hoehe (0=display:off) - kastenID
/* Status 0 = normal
1 = loading
2 = resize
4 = mit Inhalt beladen.
*/
var old_kastenID=0;
var old_targetID=0;
var size_up_speed = 10;
var size_down_speed = 20;
var c_height = 0;
/****************** PRGRAMM **************/
var xmlHttp = false;
/** AJAX functions **/
// constants
var REQUEST_GET = 0;
var REQEST_POST = 2;
var REQUEST_HEAD = 1;
var REQUEST_XML = 3;
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 sendRequest( strSource, strData, intType, intID ){
var targetID=intID;
if( !strData )
strData = '';
// default type (0 = GET, 1 = xml, 2 = POST )
if( isNaN( intType ) )
intType = 0; // GET
// previous request not finished yet, abort it before sending a new request
if( xmlHttp && xmlHttp.readyState )
{
xmlHttp.abort( );
xmlHttp = false;
}
// create a new instance of xmlhttprequest object
// if it fails, return
if( !xmlHttp )
{
xmlHttp = getXMLRequester( );
if( !xmlHttp )
return;
}
// parse query string
if( intType != 1 && ( strData && strData.substr( 0, 1 ) == '&' || strData.substr( 0, 1 ) == '?' ) )
strData = strData.substring( 1, strData.length );
// data to send using POST
var dataReturn = strData ? strData : strSource;
switch( intType )
{
case 1: // xml
strData = "xml=" + strData;
alert("xml daten");
case 2: // POST
// open the connection
xmlHttp.open( "POST", strSource, true );
xmlHttp.setRequestHeader( 'Content-Type', 'application/x-www-form-urlencoded' );
xmlHttp.setRequestHeader( 'Content-length', strData.length );
alert("post daten");
break;
case 3: // HEAD
// open the connection
xmlHttp.open( "HEAD", strSource, true );
strData = null;
alert("haed daten");
break;
default: // GET
// open the connection
var strDataFile = strSource + (strData ? '?' + strData : '' );
xmlHttp.open( "GET", strDataFile, true );
strData = null;
//alert("get daten");
}
// set onload data event-handler
xmlHttp.onreadystatechange = new Function ( "processResponse( '"+intID+"', '"+targetID+"' )" );
// send request to server
xmlHttp.send( strData ); // param = POST data
return dataReturn;
}
/**
* process the response data from server
*
* @param intID, Integer, ID of this response
*/
function processResponse(intID,targetID){
// status 0 UNINITIALIZED open() has not been called yet.
// status 1 LOADING send() has not been called yet.
// status 2 LOADED send() has been called, headers and status are available.
// status 3 INTERACTIVE Downloading, responseText holds the partial data.
// status 4 COMPLETED Finished with all operations.
if(window_array[targetID][1]!=1){
updateLoading(targetID);
}
switch( xmlHttp.readyState )
{
// uninitialized
case 0:
// loading
case 1:
// loaded
case 2:
// interactive
case 3:
break;
// complete
case 4:
// check http status
if( xmlHttp.status == 200 ) // success
{
processData( xmlHttp, targetID);
}
// loading not successfull, e.g. page not available
else
{
if( window.handleAJAXError )
handleAJAXError( xmlHttp, intID );
else
// var strData = "2404 Fehler";
updateData( strData , targetID);
alert( "ERROR\n HTTP status = " + xmlHttp.status + "\n" + xmlHttp.statusText ) ;
}
}
}
// process data from server
function processData( xmlHttp,request_array){
updateData( xmlHttp.responseXML , request_array);
}
// process data from server, updates second select menu
// data from server comes with this format: value=data&value=data...
function updateData( strData ,targetID){
if(strData){
// Löscht die Höhenangabe
/*document.getElementById("box"+targetID).style.height="";*/
// Ändern den Content
document.getElementById("box"+targetID).innerHTML=""+strData.getElementsByTagName("content")[0].firstChild.data;
window_array[targetID][1]=0;
}
}
// Sendet den "Loading" Screen an das Fenster (dabei wird die höhe nicht verändert)
function updateLoading(targetID){
/*var new_height=document.getElementById("box"+targetID).offsetHeight;
document.getElementById("box"+targetID).style.height=new_height+"px";*/
// Inhalt wird geändert
document.getElementById("box"+targetID).innerHTML="![\"\"](\"img/loading.gif\")
Loading