docs: function isSubpixelRenderingSupported() {
          // Test if subpixel rendering is supported
          // @NOTE: jQuery.support.leadingWhitespace is apparently false if browser is IE6-8
          if (!$.support.leadingWhitespace) {
              return false;
          } else {
              //span #1 - desired font-size: 12.5px
              var span = $(util.template(TEST_SPAN_TEMPLATE, { size: 12.5 }))
                  .appendTo(document.documentElement).get(0);
              var fontsize1 = $(span).css('font-size');
              var width1 = $(span).width();
              $(span).remove();
  
              //span #2 - desired font-size: 12.6px
              span = $(util.template(TEST_SPAN_TEMPLATE, { size: 12.6 }))
                  .appendTo(document.documentElement).get(0);
              var fontsize2 = $(span).css('font-size');
              var width2 = $(span).width();
              $(span).remove();
  
              // is not mobile device?
              // @NOTE(plai): Mobile WebKit supports subpixel rendering even though the browser fails the following tests.
              // @NOTE(plai): When modifying these tests, make sure that these tests will work even when the browser zoom is changed.
              // @TODO(plai): Find a better way of testing for mobile Safari.
              if (!('ontouchstart' in window)) {
  
                  //font sizes are the same? (Chrome and Safari will fail this)
                  if (fontsize1 === fontsize2) {
                      return false;
                  }
  
                  //widths are the same? (Firefox on Windows without GPU will fail this)
                  if (width1 === width2) {
                      return false;
                  }
              }
          }
  
          return true;
      }