function addImage(form,field) {
    window.open("./image_browser.php", "Prohlžeč obrázků", "width=930,height=600,status=yes,scrollbars");
    textField = eval("document." + form + "." + field);;
}

function returnImage(d) {
    txt = d;
    window.opener.textField.value = window.opener.textField.value+txt;
    window.close();
}


function fbs_click() {
u=location.href;t=document.title;
window.open('http://www.facebook.com/sharer.php?u='+encodeURIComponent(u)+'&t='+encodeURIComponent(t),'sharer','toolbar=0,status=0,width=626,height=436');
return false;
}

  function gmap_initialize() {
    if (GBrowserIsCompatible()) {
      var map = new GMap2(document.getElementById("map_canvas"));
      map.setCenter(new GLatLng(49.5, 16.50), 6);
      map.addControl(new GSmallMapControl());

      
      var redIcon = new GIcon(G_DEFAULT_ICON);
      redIcon.image = "http://gmaps-samples.googlecode.com/svn/trunk/markers/red/blank.png";
	  markerOptionsRed = { icon:redIcon };

      var orangeIcon = new GIcon(G_DEFAULT_ICON);
      orangeIcon.image = "http://gmaps-samples.googlecode.com/svn/trunk/markers/orange/blank.png";
      markerOptionsOrange = { icon:orangeIcon };

      var greenIcon = new GIcon(G_DEFAULT_ICON);
      greenIcon.image = "http://gmaps-samples.googlecode.com/svn/trunk/markers/green/blank.png";
      markerOptionsGreen = { icon:greenIcon };
		
      GDownloadUrl("./map_data.php", function(data) {
        var xml = GXml.parse(data);
        var markers = xml.documentElement.getElementsByTagName("marker");
        for (var i = 0; i < markers.length; i++) {
          var latlng = new GLatLng(parseFloat(markers[i].getAttribute("lat")),
                                  parseFloat(markers[i].getAttribute("lng")));
          if(parseInt(markers[i].getAttribute("typ"))=='2'){
          	map.addOverlay(new GMarker(latlng,markerOptionsGreen));
          }else if(parseInt(markers[i].getAttribute("typ"))=='1'){
          	map.addOverlay(new GMarker(latlng,markerOptionsOrange));
          }else{
          	map.addOverlay(new GMarker(latlng,markerOptionsRed));
          }
        }
      });
    }
  }