How to avoid AjaxMin removal for IE9 and below CSS hack

Tags: css,ajaxmin

Problem :

I'm using the following css :

.GridDraggedRow tr td.firstCol{
padding: 2px 10px 0 0;
text-align: right;
vertical-align: top;
width: 1px;
width: 1%\9; /* IE9 and below */
white-space: nowrap;

As you can see, I'm using a pretty ugly css hack. My problem is that this hack is removed from the minified css file I'm generating with AjaxMin. It is a post-build step in our delivery system so we're gonna stick with AjaxMin. The ajaxmin documentation explains that several comment-based hacks are allowed with the use of the 'hacks' flag, ex:

ajaxmin -css -comments:hacks GridLayout.css

Unfortunately the \9 hack is not allowed. What can I do ? Parsing the generated file isn't a good idea in my opinion.

I guess my best choice is to insert this hack in another non-minified file or directly in the html page between tags... Do you guys have a better idea ? It would be great that ajaxmin provide an exclusion section...

Solution :

You shouldn't be using any of those ugly hacks!!

Use Paul Irish's conditional comments method instead.

Use this at the opening of your HTML tag:

<!--[if lt IE 10 ]>    <html class="lt-ie10"> <![endif]-->
<!--[if (gt IE 9)|!(IE)]><!--> <html> <!--<![endif]-->

Then, in your CSS, use this:

.GridDraggedRow tr td.firstCol{
    padding: 2px 10px 0 0;
    text-align: right;
    vertical-align: top;
    width: 1px;
    white-space: nowrap;
.lt-ie9 .GridDraggedRow tr td.firstCol{
    width: 1%;

This is much cleaner, and much more reliable.

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