[OpenLayers-Users] WMS Example Problem

[erwin nindl]

hi,

i want to create a wms layer in combination with a osm layer.
my first trials do not work:
http://phoenix.nindl.net/~nine/agis/manual.html

or a snipped here:
>       function init() {
>         var lon = 15.4, lat = 47, zoom = 12; 
>         var map;
>         map = new OpenLayers.Map('map',{
>           projection: "EPSG:102100"
>         });
>         var osm = new OpenLayers.Layer.OSM;
>         var wms = new OpenLayers.Layer.WMS(
>           "ogd graz",
>           "http://geodaten1.graz.at/ArcGIS_Graz/services/Extern/BASISKARTE_WMS/MapServer/WMSServer",
>           {layers: '3'}
>         );
>         map.addLayers([wms, osm]);
>         //map.addLayers([wms]);
>         map.setCenter(new OpenLayers.LonLat(lon, lat, zoom).transform( new OpenLayers.Projection("EPSG:4326"), new OpenLayers.Projection("EPSG:102100")), zoom);
>         //map.setCenter(new OpenLayers.LonLat(lon, lat, zoom));
>         map.addControl(new OpenLayers.Control.LayerSwitcher());
>         map.addControl(new OpenLayers.Control.MousePosition({id:'mouse'})  ); 
>       }

the wms-source can be found here:
http://geodaten1.graz.at/ArcGIS_Graz/rest/services/Extern/BASISKARTE_WMS/MapServer

and a preview of the prefered tiles can be seen here:
http://www.arcgis.com/home/webmap/viewer.html?url=http%3a%2f%2fgeodaten1.graz.at%2fArcGIS_Graz%2frest%2fservices%2fExtern%2fBASISKARTE_WMS%2fMapServer&source=sd

where is my mistake?

best regards
 erwin