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    <p>Something like the following may work. You will probably need to deal with window's scrollLeft and scrollTop to get it perfect. You will probably want to <a href="http://closure-library.googlecode.com/svn-history/r8/trunk/closure/goog/docs/class_goog_Throttle.html" rel="nofollow noreferrer">throttle</a> and <a href="http://closure-library.googlecode.com/svn-history/r8/trunk/closure/goog/docs/closure_goog_memoize_memoize.js.html" rel="nofollow noreferrer">memoize</a> (if the drop positions don't change) it too.</p> <p>Also, some more performance can be tweaked out of it by caching <code>offset()</code>, only binding <code>mousemove</code> when needed, and by tweaking the <code>each</code> loop to utilize an optimized loop (e.g. <code>for(var i=droppables.length;i&gt;-1;){var self = droppables.eq(--i);...}</code>).</p> <p>Also note that this will only change the color of the divs when the MOUSE passes over them...not necessarily when the draggable passes over them...this makes things a little more complicate but the function below should send you in the right direction.</p> <pre><code>$(document).mousemove(function(e){ // this should be throttled... var x = e.pageX, y = e.pageY; // this loop could be optimized... $("div.droppables").each(function(){ // these vars could be memoized... var self = $(this), divL = self.offset().left, divT = self.offset().top, divR = self.width() + divL, divB = self.height() + divT; // if the MOUSE coords are between the droppable's coords // change the background color if(x &gt;= divL &amp;&amp; x &lt;= divR &amp;&amp; y &gt;= divT &amp;&amp; y &lt;= divB){ self.css("background", "red"); } else{ // reset the background color self.css("background", ""); } }); }); </code></pre>
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    1. POchange background color with change in mouse position
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    1. USDavid Murdoch
    1. USDavid Murdoch
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    1. COi have to ask...why the downvote? Please, do tell:
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    2. CO@David Murdoch: getting error `missing variable name`
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      1. USAshish Rajan
    3. COI just tested it. no errors. I've updated the code a bit; try that. Also, post the code you are ACTUALLY using.
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