There are two ul list (list A & list B). I would like to develop and drag function so that users can drag the items in list A to list B and vice versa. However, after the items is dragged, it will be disappear in the original list. How can I keep the original item in the original list?
<ul id="sortable4" class="connected sortable list1">
<li>Item 1
<li>Item 2
<li>Item 3
<li>Item 4
<li>Item 5
<li>Item 6
</ul>
<ul id="sortable5" class="connected sortable list2">
<li class="highlight">Item 1
<li class="highlight">Item 2
<li class="highlight">Item 3
<li class="highlight">Item 4
<li class="highlight">Item 5
<li class="highlight">Item 6
</ul>