[Dilettante_Pro]

yakim,

<table>
<tr>
<td id="td_name" onclick="click_td_name(this);">ООО "Вега"</td>
<td style="display:none">Some Value in next cell</td>
</tr>
</table>
<script>
function click_td_name(elem) {
   var id = elem.id;
   alert(id);
   var valnext = elem.nextElementSibling.innerText;
   alert(valnext); 
};
</script>