How can I create a button to add a POI layer?

Question

I am making a map of a city with openlayers. I have the shapefile data of the POI (hospital,bank,school etc.) I want to add the layers with buttons not in layerswitcher. Like whereis.com's quick search buttons ... Can someone please help?

Answer 1

You just need to add some javascript to your button to toggle the visibility of the layers. e.g. In your setup

var yourLayer = new OpenLayers.Layer.WMS(...);

Then in your button click event you just need something like

yourLayer.setVisibility(true);

or

map.layers[0].setVisibility(true)