// do XML request
function getXMLData(){
  var cat_1 = 1;
  var cat_2 = 1;
  var cat_3 = 1;
  var cat_4 = 1;
	if(action!='widget'){
	  if(document.getElementById('locations_cat_1').checked==false) {
	    cat_1 = 0;
	  }
	  if(document.getElementById('locations_cat_2').checked==false) {
	    cat_2 = 0;
	  }
	  if(document.getElementById('locations_cat_3').checked==false) {
	    cat_3 = 0;
	  }
	  if(document.getElementById('locations_cat_4').checked==false) {
	    cat_4 = 0;
	  }
	}
	url = 'http://'+window.location.host+'/fileadmin/templates/scripts/get_locations.php?cat_1='+cat_1+'&cat_2='+cat_2+'&cat_3='+cat_3+'&cat_4='+cat_4;
	if (http != null) {
	  http.open("GET", url, true);
	  http.send(null);
	  http.onreadystatechange = buildDataArray;
	}
}

function openDetailFrame(uid){
	detailFrame = document.getElementById('locations_detailFrame');
	detailFrame.src = 'http://www.fussifreunde.de/fileadmin/templates/scripts/location_detail.php?location_id='+uid;
}