[Rise]

Vit,

<menu type="context" id="cellpopup">
	<menuitem label="Set NULL" onclick="SelNULL()"></menuitem>
</menu>

<table id="table" border="1">
	<tr>
		<td contextmenu="cellpopup">11111</td>
		<td contextmenu="cellpopup">22222</td>
		<td contextmenu="cellpopup">33333</td>
	<tr>
</table>

<script>
var thisCell;
table.oncontextmenu = function(e) { thisCell = e.target };
function SelNULL() { alert(thisCell.innerHTML) }
</script>