Maximum extent

Discussion created by epfirman on Jul 12, 2012
Latest reply on Feb 20, 2013 by zwakhall
I have 2 layers.
The bottom layer is the "World_Street_Map" tiled map service.
The top layer is a dynamic layer covers a portion of New York State.
I set the initial extent to the extent of the dynamic layer.

If I zoom all the way out with the ZoomSlider or with "navToolbar.zoomToFullExtent()" it zooms to the entire world. How can I constrain the map so the maximum extent is equal to the extent of the dynamic layer?

  var extentMap;
  extentMap = new esri.geometry.Extent({xmin:-8478000, ymin:5014590, xmax:-8099500, ymax:5245000, spatialReference:{wkid:102100}});
        map = new esri.Map("mapDiv", { extent: extentMap, nav:true});