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Recently at work I had to code (rather, re-code) a feature table for our Shopping service.

We used images to denote the availability of features for different packages, adding them via a CSS background rule to all relevant table cells. The CSS code was initially like this:

.available {
   background: url("img/tick.gif") no-repeat;
   background-position: 50% 50%;
}

A simple — was used for cells that denoted that the feature is not available for the particular package.

All fine and dandy, but my problem was that upon printing, the browser dismissed the background image of the “available” cells, printing them completely empty.

Initially, all “available” cells contained a non-breaking space, so I decided to change the emptiness to something more semantic, like YES, hiding it in the normal, screen CSS with some text-indent magic. Then I could use the print CSS to zero out the text-indent and bring the semantic text back to viewport, now that the background-image has been dismissed.

The whole trick is like that:

YES

.available {
   background: url("img/tick.gif") no-repeat;
   background-position: 50% 50%;
   text-indent: -9999em;
}

@media print {
   .available {
       text-indent: 0;
       background-image: none;
   }
}

Now the browser will show the tick images on screen, but will lose them upon printing, replacing them with the text that you put in your table cells.

We threw some background in there to avoid printing the background image anyway, just in case the browser wants to play tough.

A simple, effective tip when you don’t want to use inline images (ticks and x’es) to tables but want to keep the semantic value of the symbol in all media.

tables, css, webdesign, print css

This entry was posted on Monday, January 14th, 2008 at 8:53 pm by Sugar and is filed under Accessibility-Usability, Web Design. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.