[BETEPAH]

<input type="checkbox" onclick="del()"/>
<table border="1">
	<tr>
		<td>номер</td>
		<td>имя</td>
		<td>отчество</td>
	</tr>
	<tr>
		<td>1</td>
		<td>Игорь</td>
		<td>Иваныч</td>
	</tr>
	<tr>
		<td>2</td>
		<td>&nbsp;</td>
		<td>&nbsp;</td>
	</tr>
	<tr>
		<td>3</td>
		<td>&nbsp;</td>
		<td>Иваныч</td>
	</tr>
	<tr>
		<td>4</td>
		<td>Игорь</td>
		<td>&nbsp;</td>
	</tr>
	<tr>
		<td>5</td>
		<td>&nbsp;</td>
		<td>&nbsp;</td>
	</tr>
</table>
<script>
function del() {
	var tr = document.getElementsByTagName('tr');
	for (var i = 0; i < tr.length; i++) {
		var count = 0;
		var td = tr[i].getElementsByTagName('td');
		for (var j = 0; j < td.length; j++) {
			if (td[j].innerHTML != '&nbsp;') count++;
		}
		if (count == 1) tr[i].parentNode.removeChild(tr[i]);
	}
} 
</script>