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;
  
  }
  