local tiles on jsp

Hi,

I have set up osm2pgsql,mapnik on ubuntu server. I have also generated tiles locally. Now I want to display these tiles on map in a JSP page. I am using open layers. I have been trying it. The code works fine in html, but if same thing I do in a jsp page, it does not open map tiles. Only pink canvas is displayed. On rightclick, it displayes map tile path as "/LocalFolder///.png". Error screen shot is attached. And source code is given below.

Please let me know what is the procedure I should follow to display local map on a jsp page(Tomcat server),

Code:

function init() {

        map = new OpenLayers.Map ($('map'), {
            controls:[
                new OpenLayers.Control.Navigation(),
                new OpenLayers.Control.PanZoomBar(),
                new OpenLayers.Control.Permalink(),
                new OpenLayers.Control.ScaleLine({geodesic: true}),
                new OpenLayers.Control.Permalink('permalink'),
                new OpenLayers.Control.MousePosition(),                    
                new OpenLayers.Control.Attribution()],
           maxExtent: new OpenLayers.Bounds(-180,-90,180,90),
            minExtent: new OpenLayers.Bounds(-1,-1,1,1),

            'maxResolution': 360/512,
            numZoomLevels: 4,
            units: 'dd',
            projection: new OpenLayers.Projection("EPSG:900913"),
          //  displayProjection: new OpenLayers.Projection("EPSG:4326")
        displayProjection: new OpenLayers.Projection("EPSG:900913")
        } );

        layerMapnik = new OpenLayers.Layer.OSM.Mapnik("Mapnik");
        layerMapnik.setOpacity(0.4);
      //  map.addLayer(layerMapnik);

        layerCycleMap = new OpenLayers.Layer.OSM.CycleMap("CycleMap");
        layerCycleMap.setOpacity(0.4);
      //  map.addLayer(layerCycleMap);

        // This is the layer that uses the locally stored tiles
       var newLayer = new OpenLayers.Layer.OSM("Localhost",
         "IndiaMap/${z}/${x}/${y}.png", {numZoomLevels: 4, alpha: true,
         isBaseLayer: true});
        //var newLayer = new OpenLayers.Layer.OSM("LocalTiles",
         "IndiaMap/${0}/${0}/${0}.png", {numZoomLevels: 10, alpha: true,
         isBaseLayer: true});
        //layerLocalMap = new OpenLayers.Layer.OSM.LocalMap("LocalMap");
    //  layerLocalMap.setOpacity(0.4);
    //newLayer.setOpacity(0.6);
        map.addLayer(newLayer);
        // This is the end of the layer

            var switcherControl = new OpenLayers.Control.LayerSwitcher();
            map.addControl(switcherControl);
            switcherControl.maximizeControl();

        if( ! map.getCenter() ){
            var lonLat = new OpenLayers.LonLat(lon, lat).transform(new  OpenLayers.Projection("EPSG:4326"), map.getProjectionObject());
            map.setCenter (lonLat, zoom);
        }
    }

maperror.png