ght );

			}

			// renderTarget --> blurPlane (horizontalBlur) --> renderTargetBlur --> blurPlane (verticalBlur) --> renderTarget
			function blurShadow( amount ) {

				blurPlane.visible = true;

				// blur horizontally and draw in the renderTargetBlur
				blurPlane.material = horizontalBlurMaterial;
				blurPlane.material.uniforms.tDiffuse.value = renderTarget.texture;
				horizontalBlurMaterial.uniforms.h.value = amount * 1 / 256;

				renderer.setRenderTarget( renderTargetBlur );
				renderer.render( 