1 /**
  2  * @namespace
  3  */
  4 var TiledImageStore; if( !TiledImageStore ) TiledImageStore = {};
  5 
  6 /**
  7  * Subclass of TiledImageStore.Fixed to provide backward-compatibility
  8  * with image stores formatted with JBrowse 1.2.1.
  9  * @class
 10  * @extends TiledImageStore.Fixed
 11  */
 12 TiledImageStore.Fixed_v0 = TiledImageStore.Fixed;
 13 TiledImageStore.Fixed_v0.prototype = new TiledImageStore.Fixed('');
 14 
 15 TiledImageStore.Fixed_v0.prototype._imageSource = function( zoom, tileIndex ) {
 16     return Util.resolveUrl( this.url, '../../' + zoom.urlPrefix + tileIndex + ".png" );
 17 };
 18