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I want to use dd belatedpng so the PNG's on my website appear properly on IE. The script I've always used on non-wordpress websites was

<!--[if lt IE 7 ]>
    <script src="js/dd_belatedpng.js"></script>
    <script> DD_belatedPNG.fix('img, .ir'); </script>

Now that I need to use it on a Wordpress website, I'm trying to find a way of adding script using enqueue script, although I don't like it at all. At the end of the day, the theme is only going to be used on a single website, I'd prefer to hardcode the scripts path.

Anyway, is there a way of adding IE conditionals to enqueue script and or register script?

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3 Answers 3

up vote 5 down vote accepted

WordPress has a $is_IE global variable:

global $is_IE;
if($is_IE) enqueue_script(...);

Personally I prefer the IE conditional comments. Other browsers ignore them anyway, so there's no reason to use PHP for browser detection.

You might also want to consider using 8 bit alpha PNG images instead of 24 bit PNGs, which don't need any javascript fix in IE, and in most cases they will look the same as a 24 bit PNG.

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Amoeba - Slight error in your example, the enqueue function call. – t31os Jan 9 '11 at 16:52
thanks. you're right, it's wp_enqueue_script() – onetrickpony Jan 9 '11 at 17:18

Enqueue doesn't support output of more complex blocks, only script files.

Best approach for this would be small function that echoes this block (conditionally if you don't need it on every single page), hooked to wp_head.

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Adding to Rarst's answer, this can be done similar to the following, in your functions file.

add_action( 'wp_head', 'add_belatedpng_js' );

if ( ! function_exists( 'add_belatedpng_js' ) ) {
  function add_belatedpng_js() {

   if (! is_admin()) {      
    echo '
    <!--[if lt IE 7]>
      <script src="js/dd_belatedpng.js"></script>
      <script> DD_belatedPNG.fix('img, .ir'); </script>
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Some accompanying words (plain text, not code) would be nice, too. – tfrommen Jan 16 '14 at 15:13

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