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POWhat is the most succinct way of rewriting this function so it produces scroll bar position?
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copied!<p>I would like to start using the <a href="http://webdev.stephband.info/parallax.html" rel="nofollow">jParallax</a> jQuery plugin to accomplish a bi-directional parallax effect on my current project, however it seems the plugin was built to use the mouse movements as its method to scroll through elements. I would like to disable the mouse position part of the plugin and use the scrollbars instead.</p> <p>After looking through the code I found the function below which serves the plugin with mouse movements:</p> <pre><code>function positionMouse(mouseport,localmouse,virtualmouse){ var difference={x:0,y:0,sum:0}; if(!mouseport.ontarget){ difference.x=virtualmouse.x- localmouse.x; difference.y=virtualmouse.y- localmouse.y; difference.sum=Math.sqrt(difference.x*difference.x+ difference.y*difference.y); virtualmouse.x=localmouse.x+ difference.x*mouseport.takeoverFactor; virtualmouse.y=localmouse.y+ difference.y*mouseport.takeoverFactor; if(difference.sum<mouseport.takeoverThresh&&difference.sum>mouseport.takeoverThresh*-1){ mouseport.ontarget=true; } } else { virtualmouse.x=localmouse.x;virtualmouse.y=localmouse.y; } } </code></pre> <p>How can I alter this code to return scrollbar movements? After, I will figure out how to alter the plugin to enable an option so you can easily switch between mouse or scrollbar control. Any direction or help would be greatly appreciated!</p> <p>It would be great if this became a fork afterwards.</p>

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