text: /**
   * @author alteredq / http://alteredqualia.com/
   * @author mr.doob / http://mrdoob.com/
   */
  
  var Detector = {
  
      canvas: !! window.CanvasRenderingContext2D,
      webgl: ( function () { try { var canvas = document.createElement( 'canvas' ); return !! ( window.WebGLRenderingContext && ( canvas.getContext( 'webgl' ) || canvas.getContext( 'experimental-webgl' ) ) ); } catch ( e ) { return false; } } )(),
      workers: !! window.Worker,
      fileapi: window.File && window.FileReader && window.FileList && window.Blob,
  
      getWebGLErrorMessage: function () {
  
          var element = document.createElement( 'div' );
          element.id = 'webgl-error-message';
          element.style.fontFamily = 'monospace';
          element.style.fontSize = '13px';
          element.style.fontWeight = 'normal';
          element.style.textAlign = 'center';
          element.style.background = '#fff';
          element.style.color = '#000';
          element.style.padding = '1.5em';
          element.style.width = '400px';
          element.style.margin = '5em auto 0';
  
          if ( ! this.webgl ) {
  
              element.innerHTML = window.WebGLRenderingContext ? [
                  'Your graphics card does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">WebGL</a>.<br />',
                  'Find out how to get it <a href="http://get.webgl.org/" style="color:#000">here</a>.'
              ].join( '\n' ) : [
                  'Your browser does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">WebGL</a>.<br/>',
                  'Find out how to get it <a href="http://get.webgl.org/" style="color:#000">here</a>.'
              ].join( '\n' );
  
          }
  
          return element;
  
      },
  
      addGetWebGLMessage: function ( parameters ) {
  
          var parent, id, element;
  
          parameters = parameters || {};
  
          parent = parameters.parent !== undefined ? parameters.parent : document.body;
          id = parameters.id !== undefined ? parameters.id : 'oldie';
  
          element = Detector.getWebGLErrorMessage();
          element.id = id;
  
          parent.appendChild( element );
  
      }
  
  };
  
  // browserify support
  if ( typeof module === 'object' ) {
  
      module.exports = Detector;
  
  }
  