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    <p>Because the implementation of a timer wasn't possible, I ended up with a hole different solution, it's a kind of brut-force-running the animation within a setInterval:</p> <pre><code>function animate(elementId,pictureTimeArrayName){ var elementStyle = document.getElementById(elementId).style; var pictureTimeArray = window[pictureTimeArrayName]; function toInterval(startDate, timeSinceStart, picture){ var interval = setInterval(function(){ if(Date.now()-startDate&gt;=timeSinceStart){ clearInterval(interval); elementStyle.background = "url("+picture+")"; } },2); } setInterval(function(){ var startDate = Date.now(); for(var i=0;i&lt;pictureTimeArray.length;i++){ toInterval(startDate,pictureTimeArray[i].time,pictureTimeArray[i].picture); } },pictureTimeArray[pictureTimeArray.length-1].time); } </code></pre> <p>While an array looks like this:</p> <pre><code>var array_1 = [{picture: "animations/pic_1.gif", time: "30"}, {picture: "animations/pic_2.gif", time: "60"}, ... {picture: "animations/pic_36.gif", time: "1080"},]; </code></pre> <p>This looks quite good (for >=30 fps). But: When an animated Gif is running, it's still not that smooth anymore. And if it is an animation repeating itself, the drawings aren't always clean. In some never browser versions (from Firefox) the drawing is even worse than in older versions, and other browsers (Chrome) have their problems, too. Especially if you change the browser window in Chrome and get back to the window: The animation will look really weird.</p> <p>So you probably better use Flash or another non-Javascript-solution for your professional animations.</p>
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    1. POHow to write a fast timer in Javascript?
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    1. POHow to write a fast timer in Javascript?
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    1. CO…or you don't try to use animated GIFs, but do it with JS. With `requestAnimationFrame` you can get consistent high-FPS smooth animations, there is absolutely no need for Flash or Java these days.
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    2. COYou should know that there are animations and animations. Animations from beginners have all the same frame rate per picture. That's nice (you can easily use requestAnimationFrame for this), but unsuitable for professional animations. For professional animations, you must choose a high framerate (about 33 fps is good) and then you need to dynamicly adapt the time for every picture (some last for 15 or 20ms, others for 40ms). That's how real animation is done. But you're certainly right about Java, applets are dead for a long time. And who's using JavaFX since more user have Flash installed? ;)
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    3. COHowever, if you really want to make a modern website with maximised animation for the newest browsers, you won't use requestAnimationFrame, but you'll use WebGL: http://en.wikipedia.org/wiki/WebGL
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