Table Row Counter
HTML
<button id="rowCount">Count 'Em</button>
<br />
<table id="myTable">
<tr>
<td></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td></td>
</tr>
</table>
JavaScript
$(function() {
$('#rowCount')
.button()
.click(function() {
alert("Rows = " + ($('table#myTable tr:last').index() +1-2));
})
});