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copied!<p>Simple solution (see <a href="http://jsfiddle.net/ek8Fc/5/">DEMO</a>):</p> <pre><code><!DOCTYPE html> <html> <head> <style> #parent { height: 300px; width: 300px; border: 1px black solid; position: relative; left: 0; } #images { height: 100px; width: 100px; background-color:orange; } </style> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.js"></script> <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.5/jquery-ui.js"></script> </head> <body> <div id="parent"> <div class="container"> <div id="images"></div> </div> </div> <script> $(document).ready(function() { var $document = $(document), $parent = $("#parent"), $container = $(".container", $parent), offset = $container.offset(), scrollbarSafety = 15; // use this to avoid dragging outside of window, thus creating scrollbars and wreaking all kinds of havoc on draggables containment checks $container .width($document.width() - offset.left - scrollbarSafety) .height($document.height() - offset.top - scrollbarSafety); $("#images") .draggable( { containment: $container, drag: function(event, ui) { var $draggee = $(this), draggeePosition = $draggee.position(), shouldWidth = draggeePosition.left + $draggee.width(), shouldHeight = draggeePosition.top + $draggee.height(); if($parent.width() < shouldWidth) { $parent.width(shouldWidth); } if($parent.height() < shouldHeight) { $parent.height(shouldHeight); } } } ); }); </script> </body> </html> </code></pre>

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