[jQuery] Multiple checkbox validation
<div>
<ul id="sortable">
<li id="1"><span></span>
Item1
<input type="checkbox" id="chk1" value="1" /><img
src="images/close.gif"
onclick="ClearSearchDataOnClose1()" />
</li>
<li id="2"><span></span>
Item 2
<input type="checkbox" id="Checkbox1" value="2" /><img
src="images/close.gif"
onclick="ClearSearchDataOnClose2()" /></li>
<li id="3"><span></span>
Item 3<input type="checkbox" id="Checkbox2" value="3" /