StackOverflow2013

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18492548
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2013-08-28T15:45:40.933
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2013-08-30T15:58:53.267
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2017-05-23T12:21:31.417
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text
Body
So you're trying to get CSS sprites - background images with adjustable background positions - working with html <code><map></code> <code><area></code> elements? Tricky but possible. <h2><a href="http://jsbin.com/urOsoku/8/edit" rel="nofollow noreferrer">DEMO on jsbin</a></h2> This is tested in Firefox, Chrome, Opera and Safari (August 2013), plus Internet Explorer 7, 8, 9 and 10. <hr> You basically just need an <code><img></code> with an invisible but valid <code>src</code> attribute that doesn't cause the browser to show its 'broken image' icon. My preferred way is this, a 1px by 1px transparent gif, base64 encoded so no actual .gif file is needed: <pre><code>src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAIC‌RAEAOw==" </code></pre> There are a few other suggested methods at <a href="https://stackoverflow.com/questions/5775469/whats-the-valid-way-to-include-an-image-with-no-src">"What's the valid way to include an image with no src?"</a> but all the others I tried had at least one issue. This just worked fine. Then it's just the usual stuff: <ul> <li>fixed height and width, ideally through css</li> <li>a background image with background position set, like in normal sprite images.</li> <li>a <code>usemap</code> attribute just like normal when making an image map (like <code>usemap="#someArea"</code> with a <code>#</code> if you want old IE support - as normal).</li> <li>normal <code><map></code> element with id corresponding to <code>img</code>'s <code>usemap</code>, containing <code><area></code> elements</li> </ul> <hr> If your goal is to have multiple images with associated areas from different locations on the same sprite sheet, you might run into this problem: <a href="https://stackoverflow.com/questions/4536306/overlapping-images-w-image-maps-obstructing-each-other">Overlapping images w/ image maps obstructing each other</a>. The simple solution suggested there works well with image maps: assign your <code><map></code> to one completely transparent image as above but with no background image, keep it above all other images, then have the images as regular image sprites underneath.
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1. POCSS Sprites and Image Mapping
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1. PTAnswer
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1. USCommunity
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1. USuser568458
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