h[3]);
        }
    }
    else {
        /* Disable the stylesheet that contains the @viewport to test. */
        testStyleSheet.disabled = true;

        /* Retrieve the initial viewport values before applying the @viewport to
           test. */
        viewport.fontSize = parseInt(getComputedStyle(testElm, "").fontSize);
        viewport.initialWidth = testElm.offsetWidth;
        viewport.initialHeight = testElm.offsetHeight;

        /* Enable the stylesheet that contains the @viewport to test. */
  