drag and drop in php
<p>A <strong>drag and drop</strong> work in <strong>firefox</strong> but when see <strong>ie</strong>(internet explore) <strong>drag and drop</strong> is not work a code in php</p>

<p>please help me.</p>

<p>I use jquery ui librey ui.droppable.js but in some error</p>

<p>$.ui is undefined
[Break On This Error]   </p>

<p>_ui: function(c)</p>
