[OpenLayers-Users] Dependent layers in overlay of LayerSwitcher

[S.Reena]

Hi,

I have made Overlay so that it consists on 7 layers..last three not being
shown in LayerSwitcher. I want that if I uncheck layer 2...layer 5 shud also
disappear from map same for layers (3,6) and (4,7). I modified the
LayerSwitcher like this:  


 updateMap: function() {

        // set the newly selected base layer
        for(var i=0; i < this.baseLayers.length; i++) {
            var layerEntry = this.baseLayers[i];
            if (layerEntry.inputElem.checked) {
                this.map.setBaseLayer(layerEntry.layer, false);
            }
        }

        // set the correct visibilities for the overlays
        for(var i=0; i < this.dataLayers.length; i++) {
           // alert(i);
            var layerEntry = this.dataLayers[i];
            layerEntry.layer.setVisibility(layerEntry.inputElem.checked);
        // Added By Reena
                if((i==1)&& (layerEntry.layer.visibility==false))
                {
                        var layerEntry1 = this.dataLayers[5];
                        layerEntry1.layer.setVisibility(false);
                }

                 if((i==2)&& (layerEntry.layer.visibility==false))
                {
                        var layerEntry1 = this.dataLayers[6];
                        layerEntry1.layer.setVisibility(false);
                }
                 if ((i==3)&& (layerEntry.layer.visibility==false))
                {
                        var layerEntry1 = this.dataLayers[7];
                        layerEntry1.layer.setVisibility(false);
                }


        }

    },
..................

The problem is that if I dont show the last three layers in LayerSwitcher
...its not working ...but if I do then it is....the value of 'i' is not
incrementing till the last layer but to the displayed layer only.
The layers I have made is like this
--------------------------------------
 wms[5] = new OpenLayers.Layer.WMS.Untiled(
                  "
label","http://gis.rtbi-iitm.in/cgi-bin/mapserv?map=/var/www/html/v1/mapfile/dist_label.map",
                   {'layers':
"TN_District",'transparent':"true"},{'displayInLayerSwitcher':true},{'isBaseLayer':false});

         wms[6] = new OpenLayers.Layer.WMS.Untiled(
                  "
label","http://gis.rtbi-iitm.in/cgi-bin/mapserv?map=/var/www/html/v1/mapfile/taluk_label.map",
                   {'layers':
"Tnd_Taluk",'transparent':"true"},{'displayInLayerSwitcher':true},{'isBaseLayer':false});

          wms[7] = new OpenLayers.Layer.WMS.Untiled(
                  "
label","http://gis.rtbi-iitm.in/cgi-bin/mapserv?map=/var/www/html/v1/mapfile/vill_label.map",
                  
{'layers':"Tnd_Village",'transparent':"true"},{'displayInLayerSwitcher':true},{'isBaseLayer':false});


-------------------------------------------

Can any1 help?

Cheers,
Reena.






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