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    <p>Looking at the source, it looks like the <strong>rev</strong> option is only for animations, which doesn't apply to fade. Here is the exact comment:</p> <pre><code>// causes animations to transition in reverse (for effects that support it such as scrollHorz/scrollVert/shuffle) </code></pre> <p>You may be looking for <strong>backwards</strong>:</p> <pre><code>// true to start slideshow at last slide and move backwards through the stack </code></pre> <p>Try setting that to true when you want to reverse the order.</p> <p><strong>EDIT:</strong> There is probably a better way to do this. In any case, here is one way. First, add a click handler to your button that calls some function:</p> <pre><code>function toggleDirection(){ // replace your_slide_div with whatever your div is named $('.your_slide_div').cycle("toggleDirection"); } </code></pre> <p>Then in the cycle plugin JS file, look for the <strong>handleArguments(cont, options, arg2)</strong> function. In the switch statement, add a case:</p> <pre><code>case "toggleDirection": $(cont).data('cycle.opts').backwards = $(cont).data('cycle.opts').backwards ? false : true; if($(cont).data('cycle.opts').backwards) $(cont).data('cycle.opts').nextSlide = $(cont).data('cycle.opts').nextSlide - 2 &lt; 0 ? $(cont).children().length - 1 : $(cont).data('cycle.opts').nextSlide - 2; else $(cont).data('cycle.opts').nextSlide = $(cont).data('cycle.opts').nextSlide + 2 &gt;= $(cont).children().length ? 0 : $(cont).data('cycle.opts').nextSlide + 2; return false; </code></pre> <p><strong>EDIT:</strong> This case assumes that you are sliding through all your images. If you are using the <strong>slideExpr</strong> option, then this will cause problems.</p> <p>Note that this toggles the direction, so clicking the button twice returns it to normal, if you only want it to reverse it, change the case to:</p> <pre><code>(cont).data('cycle.opts').backwards = true; </code></pre> <p><strong>EDIT:</strong> Last one hopefully. In the plugin JS file, do a search for the following:</p> <pre><code>opts.nextSlide &lt; opts.currSlide </code></pre> <p>Replace that specific selection with:</p> <pre><code>opts.currSlide == els.length - 1 </code></pre>
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    1. POHow can I reverse the order of pictures shown in a jQuery Cycle slideshow during playback?
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    1. COOops I missed that, thanks, I'll check it out. How can I change the 'backwards' option from 'false' to 'true' during runtime? Is it possible to do something like $("#slides").cycle({ backwards: 'true'}); in a 'click' event handler without having to set the rest of options again?
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    2. CO@ZDYN: I've tried with your method and it's not working either. I actually tried toggle one and the non-toggle one. I changed the plugin js file as you say and called the new handler with a 'click' event in the button, but nothing. Maybe there's something else that needs to be changed? Your method makes sense, though.
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    3. CO@ZYDN: I've just been able to test that the call to "toggleDirection" actually works. What it's not working (at least for me) is the code inside the 'case' statement that actually is supposed to change the direction.
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