[OpenLayers-Dev] Problem with getting latitude nad longitude(mapnik layer)

[sniipe]

Hi!

I am a beginner in GIS and maps programming. I try to do a certain  
project but I have some problems. Here is my code:

OpenLayers.Control.Click = OpenLayers.Class(OpenLayers.Control, {
                 defaultHandlerOptions: {
                     'single': true,
                     'double': false,
                     'pixelTolerance': 0,
                     'stopSingle': false,
                     'stopDouble': false
                 },

                 initialize: function(options) {
                     this.handlerOptions = OpenLayers.Util.extend(
                         {}, this.defaultHandlerOptions
                     );
                     OpenLayers.Control.prototype.initialize.apply(
                         this, arguments
                     );
                     this.handler = new OpenLayers.Handler.Click(
                         this, {
                             'click': this.trigger
                         }, this.handlerOptions
                     );
                 },

                 trigger: function(e) {
                     var lonlat = map.getLonLatFromViewPortPx(e.xy);
                     document.getElementById('lat').value =  
lonlat.lat.toString();
                     document.getElementById('lng').value =  
lonlat.lon.toString();
                 }

             });
             var map;
             function init(){
                 map = new OpenLayers.Map('map');

                 var layerMapnik = new  
OpenLayers.Layer.OSM.Mapnik("Mapnik");
                 var ol_wms = new OpenLayers.Layer.WMS( "OpenLayers  
WMS",
                     "http://labs.metacarta.com/wms/vmap0?", {layers:  
'basic'} );

                 map.addLayers([layerMapnik, ol_wms]);
                 map.addControl(new OpenLayers.Control.LayerSwitcher());
                 // map.setCenter(new OpenLayers.LonLat(0, 0), 0);
                 map.zoomToMaxExtent();

                 var click = new OpenLayers.Control.Click();
                 map.addControl(click);
                 click.activate();

             }

On click event(only on Mapnik layer) I received some data, but it is  
not longitude and latitude. And my question is how to convert it to  
get properly values(lat, lon)?

With kind regards
snipe