function createRequestObject() {
    var req = (window.XMLHttpRequest) 
               ?
               new XMLHttpRequest()
               :
               ((window.ActiveXObject)
               ?
               new ActiveXObject("Microsoft.XMLHTTP")
               :
               false
               );
    return req;
}

var http = createRequestObject();

///************ GET Request ******************//////////
/// Abfrege der vorhandenen Datensätze /////
function sndReqGetArtikeldetails(action,target) {
    http.open('get', target+'?anzeigenid='+action,true);
    http.onreadystatechange = handleResponse;
    http.send(null);
}
/// Abfrage eines Datensatzes/////

function sndReqGetOneDetail(action,detail,target,handle) {
    http.open('get', target+'?id='+action+'&zelle='+detail,true);
    if(handle == "detailmore"){
    	http.onreadystatechange = handleResponseMore;
    	}else{
    	http.onreadystatechange = handleResponseOne;
    	}
    http.send(null);
}

//********** POST Request ********//////////////////////
var http_request = false;
   function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
        if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/xml');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         displayAlert("negativalert","Achtung! Es ist ein Fehler aufgetreten!");
         return false;
      }
      
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
      //displayAlert("positivalert","Daten erfolgreich gespeichert");
   }
  
  function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById('myspan').innerHTML = result;            
         } else {
            alert('There was a problem with the request. Please try again or contact Admin.');
            displayAlert("negativalert","Achtung! Es ist ein Fehler aufgetreten!");
         }
      }
   }


////***** Hier werden die Variablen dem php Script auf der jeweiligen Seite übergeben  alte Anzeigenverwaltung ***////
/*
   /// update bestehende datensätze
   function get(obj) {
      var poststr = "edittextarea=" + encodeURI( document.getElementById("edittextarea").value) +
                    "&datensatzid=" + encodeURI( document.getElementById("datensatzid").value) + 
                    "&targetcol=" + encodeURI( document.getElementById("targetcol").value);
      makePOSTRequest('update.php', poststr);
   }
   //// neue datenzeile anlegen
   function getInNew(obj) {
      var poststr = "projekte_id=" + encodeURI( document.getElementById("projekte_id").value)+
                    "&bearbeiter_id=" + encodeURI( document.getElementById("bearbeiter_id").value)+
                    "&seite=" + encodeURI( document.getElementById("seite").value)+
                    "&kunde=" + encodeURI( document.getElementById("kunde").value)+
                    "&motiv=" + encodeURI( document.getElementById("motiv").value)+
                    "&neu=" + encodeURI( document.getElementById("neu").value)+
                    "&format=" + encodeURI( document.getElementById("format").value)+
                    "&lieferart=" + encodeURI( document.getElementById("lieferart").value)+
                    "&editid=" + encodeURI( document.getElementById("editid").value);
      
      makePOSTRequest('insert.php', poststr);
      var projekte_id = encodeURI(document.getElementById("projekte_id").value);
      sndReqGetArtikeldetails(projekte_id,"select.php");
   }

*/
////***** Hier werden die Variablen dem php Script auf der jeweiligen Seite übergeben Projekte 2_0 ***////
  /// update bestehende datensätze
   function get(obj) {
      var poststr = "edittextarea=" + encodeURI( document.getElementById("edittextarea").value) +
                    "&datensatzid=" + encodeURI( document.getElementById("datensatzid").value) + 
                    "&targetcol=" + encodeURI( document.getElementById("targetcol").value);
      makePOSTRequest('update.php', poststr);
   }
   //// neue datenzeile anlegen
   function getInNew(obj) {
      /*var poststr = "projekte_id=" + encodeURI( document.getElementById("projekte_id").value)+
                    "&bearbeiter_id=" + encodeURI( document.getElementById("bearbeiter_id").value)+
                    "&seite=" + encodeURI( document.getElementById("seite").value)+
                    "&kunde=" + encodeURI( document.getElementById("kunde").value)+
                    "&motiv=" + encodeURI( document.getElementById("motiv").value)+
                    "&neu=" + encodeURI( document.getElementById("neu").value)+
                    "&format=" + encodeURI( document.getElementById("format").value)+
                    "&lieferart=" + encodeURI( document.getElementById("lieferart").value)+
                    "&editid=" + encodeURI( document.getElementById("editid").value);*/
      var poststr = "ix";
      makePOSTRequest('insert.php', poststr);
      //var projekte_id = encodeURI(document.getElementById("projekte_id").value);
      //sndReqGetArtikeldetails(projekte_id,"select.php");
   }
///***************************************************************************///////////////////////////////////////

////***** Request auswerten *********/////////////////
function handleResponse() {
   
   if (http.readyState==4)
        {
            if (http.status == 200)
            {
                var d = document.getElementById("element");
                d.innerHTML = http.responseText;
                //alert(http.responseText);   
            }
        }
   
}

function handleResponseOne() {
   
   if (http.readyState==4)
        {
            if (http.status == 200)
            {
                //alert(http.responseText);
                var d = document.getElementById("edittextarea");
                d.value = http.responseText;
                   
            }
        }
   
}

function handleResponseMore() {
   
   if (http.readyState==4)
        {
            if (http.status == 200)
            {
            	/// http.responseText übergibt aus selectone.php einen string der aus $zelle==>>$wert geformt wurde ///
            	var me = http.responseText;
		var a= me.split("$");
		var ou = new Array();
		var test = "";
		
		for (var i=0;i<a.length;i++)
 		{
 			//// string wird zerteilt und in ein Array ou geschrieben mit index=zelle //
  			var b = a[i].split("==>>");
  			var et = b[0];
  			var zt = b[1];
  			test = test + et + " " + zt + "/";
  			ou[et] = zt;
  			
  			
   		}
            	//// Befüllen der <input> Tags ////
            	var d = document.getElementById("seite").value = ou["seite"];
            	var e = document.getElementById("kunde").value = ou["kunde"];
            	var f = document.getElementById("motiv").value = ou["motiv"];
            	var f = document.getElementById("editid").value = ou["id"];
            	var neu = ou["neu"];
            	var forma = ou["format"];
            	var lieferart = ou["lieferart"];
            	
            	if(neu == "neu"){
            		var g = document.getElementById("neu").options[0].selected = true;
            	}else if(neu == "wh"){
            		var g = document.getElementById("neu").options[1].selected = true;
            		}
                
                if(forma == "1"){
            		var g = document.getElementById("format").options[0].selected = true;
            	}else if(forma == "0.5"){
            		var g = document.getElementById("format").options[1].selected = true;
            	}
            	else if(forma == "vgl. Bem."){
            		var g = document.getElementById("format").options[2].selected = true;
            		}
                
                if(lieferart == "ftp"){
            		var g = document.getElementById("lieferart").options[0].selected = true;
            	}else if(lieferart == "isdn"){
            		var g = document.getElementById("lieferart").options[1].selected = true;
            		}
                else if(lieferart == "email"){
            		var g = document.getElementById("lieferart").options[2].selected = true;
            		}
                else if(lieferart == "post"){
            		var g = document.getElementById("lieferart").options[3].selected = true;
            	}
            	else if(lieferart == "inhouse"){
            		var g = document.getElementById("lieferart").options[4].selected = true;
            		}
                
            }
        }
   
}