var WEBGL={isWebGLAvailable:function(){try{var canvas=document.createElement('canvas');return!!(window.WebGLRenderingContext&&(canvas.getContext('webgl')||canvas.getContext('experimental-webgl')));}catch(e){return false;}},isWebGL2Available:function(){try{var canvas=document.createElement('canvas');return!!(window.WebGL2RenderingContext&&canvas.getContext('webgl2'));}catch(e){return false;}},getWebGLErrorMessage:function(){return this.getErrorMessage(1);},getWebGL2ErrorMessage:function(){return this.getErrorMessage(2);},getErrorMessage:function(version){var names={1:'WebGL',2:'WebGL 2'};var contexts={1:window.WebGLRenderingContext,2:window.WebGL2RenderingContext};var message='Your $0 does not seem to support <a href="http://khronos.org/webgl/wiki/Getting_a_WebGL_Implementation" style="color:#000">$1</a>';var element=document.createElement('div');element.id='webglmessage';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(contexts[version]){message=message.replace('$0','graphics card');}else{message=message.replace('$0','browser');}
message=message.replace('$1',names[version]);element.innerHTML=message;return element;}};