salzhrani

if( !HTMLCanvasElement.prototype.toBlob ) {
	Object.defineProperty( HTMLCanvasElement.prototype, 'toBlob',
	{ 
		value: function( callback, type, quality )
		{
			var bin = atob( this.toDataURL( type, quality ).split(',')[1] ),
			len = bin.length,
			len32 = len >> 2,
			a8 = new Uint8Array( len ),
			a32 = new Uint32Array( a8.buffer, 0, len32 );