Box Shadow

css3.php

     /**
      * Output CSS3 box shadows
      *
      * @param string $xOffset  The x offset of the shadow
      * @param string $yOffset  The y offset of the shadow
      * @param string $size     Size of the shadow
      * @param string $opacity  You can either specify an opacity value (0 through 1) or a hex color value
      * @param string $location You can specify this optionally as 'inset' and the shadow will be inside of the element instead of outside
      *
      * @return string
      */
      public function dropShadow($xOffset = 0, $yOffset = 0, $size = 0, $opacity = 0, $location = '')
      {
          if (strstr($opacity, '#')) {
              $opacity = $opacity;
          } else {
              $opacity = "rgba(0, 0, 0, {$opacity})";
          }

          $css = "box-shadow: {$location} {$xOffset} {$yOffset} {$size} {$opacity}; -moz-box-shadow: {$location} {$xOffset} {$yOffset} {$size} {$opacity}; -webkit-box-shadow: {$location} {$xOffset} {$yOffset} {$size} {$opacity};";
          return $css;
      }