var http_request = false;
   
   function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } 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');
         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);
   }

   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.');
         }
      }
   }

function get_ag_act(obj) {
  	var getstr = "";
	getstr = "ag_act_naam=" + encodeURI( document.getElementById("ag_act_naam").value ) +
	 "&ag_act_datum=" + encodeURI( document.getElementById("ag_act_datum").value ) +
	"&ag_act_tijdstip=" + encodeURI( document.getElementById("ag_act_tijdstip").value ) +
	"&ag_act_groep_id=" + encodeURI( document.getElementById("ag_act_groep_id").value ) +
	"&ag_act_balk_bestand=" + encodeURI( document.getElementById("ag_act_balk_bestand").value ) +
	"&ag_act_poster_bestand=" + encodeURI( document.getElementById("ag_act_poster_bestand").value ) +
	"&ag_act_activiteit_id=" + encodeURI( document.getElementById("ag_act_activiteit_id").value ) +
	"&ag_act_beschrijving=" + encodeURI( document.getElementById("ag_act_beschrijving").value ) +
    "&action_wijz=" + encodeURI( document.getElementById("action_wijz").value );
 	makePOSTRequest('beheer_agenda-wijzigingen.php', getstr);
	}

function get_ag_agenda(obj) {
  	var getstr = "";
	getstr = "ag_agenda_naam=" + encodeURI( document.getElementById("ag_agenda_naam").value ) +
	 "&ag_agenda_datum=" + encodeURI( document.getElementById("ag_agenda_datum").value ) +
	"&ag_agenda_tijdstip=" + encodeURI( document.getElementById("ag_agenda_tijdstip").value ) +
	"&ag_agenda_beschrijving=" + encodeURI( document.getElementById("ag_agenda_beschrijving").value ) +
	"&ag_agenda_id=" + encodeURI( document.getElementById("ag_agenda_id").value ) +
    "&action_wijz=" + encodeURI( document.getElementById("action_wijz").value );
 	makePOSTRequest('beheer_agenda-wijzigingen.php', getstr);
	}
	
function get_bs_verstuur(obj) {
  	var getstr = "";
	getstr = "bs_aan_gebr=" + encodeURI( document.getElementById("bs_aan_gebr").value ) +
    "&bs_aan_werk=" + encodeURI( document.getElementById("bs_aan_werk").value ) +
    "&bs_van_type=" + encodeURI( document.getElementById("bs_van_type").value ) +
    "&bs_van_id=" + encodeURI( document.getElementById("bs_van_id").value ) +
    "&bs_onderwerp=" + encodeURI( document.getElementById("bs_onderwerp").value ) +
    "&bs_bericht=" + encodeURI( document.getElementById("bs_bericht").value ) +
	"&gebruiker_id_afzender=" + encodeURI( document.getElementById("gebruiker_id_afzender").value ) +	
	"&bs_bericht_opstellen=" + encodeURI( document.getElementById("bs_bericht_opstellen").value ) +
	"&bs_geadresseerden=" + encodeURI( document.getElementById("bs_geadresseerden").value ) +
    "&action_wijz=" + encodeURI( document.getElementById("action_wijz").value );
	makePOSTRequest('vrij_centrum-wijzigingen.php', getstr);
	/*window.location='newurl.html';*/
	}
function get_wg_doc(obj) {
  	var getstr = "";
	getstr = "test=" + encodeURI( document.getElementById("test").value ) +
    "&wg_doc_bestand_keuze=" + encodeURI( document.getElementById("wg_doc_bestand_keuze").value ) +
    "&werkgroep_id=" + encodeURI( document.getElementById("werkgroep_id").value ) +
    "&action_wijz=" + encodeURI( document.getElementById("action_wijz").value ) +
    //"&vergadering_naam=" + encodeURI( document.getElementById("vergadering_naam").value ) + 
    //"&field_naam=" + encodeURI( document.getElementById("field_naam").value );
	//"&gebruiker_id_afzender=" + encodeURI( document.getElementById("gebruiker_id_afzender").value ) +	
	//"&bs_bericht_opstellen=" + encodeURI( document.getElementById("bs_bericht_opstellen").value ) +
	//"&bs_geadresseerden=" + encodeURI( document.getElementById("bs_geadresseerden").value ) +
    "&wg_doc_file=" + encodeURI( document.getElementById("wg_doc_file").value );
	makePOSTRequest('vrij_centrum-wijzigingen.php', getstr);
}


function get_wgvergader(obj) {
  	var getstr = "";
	getstr = "wg_ver_werkgroep=" + encodeURI( document.getElementById("wg_ver_werkgroep").value ) +
    "&wg_ver_datum=" + encodeURI( document.getElementById("wg_ver_datum").value ) +
    "&wg_ver_tijdstip=" + encodeURI( document.getElementById("wg_ver_tijdstip").value ) +
    "&wg_ver_opmerkingen=" + encodeURI( document.getElementById("wg_ver_opmerkingen").value ) +
    "&werkgroep_id=" + encodeURI( document.getElementById("werkgroep_id").value ) +
    "&action_wijz=" + encodeURI( document.getElementById("action_wijz").value );
	makePOSTRequest('vrij_centrum-wijzigingen.php', getstr);
	/*window.location='newurl.html';*/
	}
	  
function get_wgedit(obj) {
  	var getstr = "";
	getstr = "wg_naam=" + encodeURI( document.getElementById("wg_naam").value ) +
    "&wg_contactpersoon_id=" + encodeURI( document.getElementById("wg_contactpersoon_id").value ) +
    "&wg_notulist_id=" + encodeURI( document.getElementById("wg_notulist_id").value ) +
    "&wg_beschrijving=" + encodeURI( document.getElementById("wg_beschrijving").value ) +
	"&werkgroep_id=" + encodeURI( document.getElementById("werkgroep_id").value ) +
	"&action_wijz=" + encodeURI( document.getElementById("action_wijz").value );
	makePOSTRequest('vrij_centrum-wijzigingen.php', getstr);
	}

/*
function get(obj) {
  	var getstr = "?";
	for (i=0; i<obj.getElementsByTagName("input").length; i++) {
		if (obj.getElementsByTagName("input")[i].type == "text") {
        	getstr += obj.getElementsByTagName("input")[i].name + "=" + 
            obj.getElementsByTagName("input")[i].value + "&";
        	}
        if (obj.getElementsByTagName("input")[i].type == "checkbox") {
           	if (obj.getElementsByTagName("input")[i].checked) {
            	getstr += obj.getElementsByTagName("input")[i].name + "=" + 
                obj.getElementsByTagName("input")[i].value + "&";
          		 } 
			else {
            	getstr += obj.getElementsByTagName("input")[i].name + "=&";
           		}
        	}
        if (obj.getElementsByTagName("input")[i].type == "radio") {
           	if (obj.getElementsByTagName("input")[i].checked) {
              	getstr += obj.getElementsByTagName("input")[i].name + "=" + 
                obj.getElementsByTagName("input")[i].value + "&";
           		}
			}  
		if (obj.getElementsByTagName("input")[i].tagName == "select") {
        	var sel = obj.getElementsByTagName("input")[i];
	        getstr += sel.name + "=" + sel.options[sel.selectedIndex].value + "&";
    		}
		if (obj.getElementsByTagName("input")[i].tagName == "TEXTAREA") {
        	getstr += obj.getElementsByTagName("input")[i].name + "=" + 
            obj.getElementsByTagName("input")[i].value + "&";
    		}
		}
	*/

   /*
      var getstr = "?";
      for (i=0; i<obj.childNodes.length; i++) {
         if (obj.childNodes[i].tagName == "INPUT") {
            if (obj.childNodes[i].type == "text") {
               getstr += obj.childNodes[i].name + "=" + obj.childNodes[i].value + "&";
            }
		    if (obj.childNodes[i].type == "textarea") {
               getstr += obj.childNodes[i].name + "=" + obj.childNodes[i].value + "&";
            }
            if (obj.childNodes[i].type == "checkbox") {
               if (obj.childNodes[i].checked) {
                  getstr += obj.childNodes[i].name + "=" + obj.childNodes[i].value + "&";
               } else {
                  getstr += obj.childNodes[i].name + "=&";
               }
            }
            if (obj.childNodes[i].type == "radio") {
               if (obj.childNodes[i].checked) {
                  getstr += obj.childNodes[i].name + "=" + obj.childNodes[i].value + "&";
               }
            }
         }   
         if (obj.childNodes[i].tagName == "SELECT") {
            var sel = obj.childNodes[i];
            getstr += sel.name + "=" + sel.options[sel.selectedIndex].value + "&";
         }     
      }
	  // TEXTAREAS HANDMATIG OPGEVEN!
	  //getstr += "mytextarea1=" + encodeURI( document.getElementById("mytextarea1").value ) +
      //"&mytextarea2=" + encodeURI( document.getElementById("mytextarea2").value );
      makePOSTRequest('test2.php', getstr);
*/
  
  /*
      var poststr = "mytextarea1=" + encodeURI( document.getElementById("mytextarea1").value ) +
                    "&mytextarea2=" + encodeURI( document.getElementById("mytextarea2").value );
      makePOSTRequest('test2.php', poststr);

   }
 */