How to set the Latitude and Longitude range that focuses on a specific region in Mercator Projection when the layer loads in OpenLayers API ? Is there any way to put image over the layer?
You want to overlay a image(raster) over the vector layer. This will hide the vector data because of the layer order preference used in OL
you can add images using OpenLayers.Layer.Image
var imgLayer = new OpenLayers.Layer.Image("img",http://myserver.com/images/img.png"); map.addLayers([imgLayer]);