selenium IDE - how to storeText just the id within a link? - selenium

Question

How can I create a variable that has the id from one of my records on the index page?
I can use xpath to get at the anchor I want with:
storeText
//table[#id='districts']//tr/td/a[text()='Fairview Union']
id_of_another_district
but that gets the link name. I want to id for that record, i.e. in the original source code I have:
<tr>
<td>
Fairview Union
<span class='small'>(Select)</span>
</td>
<td></td>
<td></td>
<td></td>
<td class='rightalign'>01/09/2012</td>
<td></td>
<td></td>
<td><img alt="Delete" src="/assets/icons/delete-a77f3c3c125b0817085648f284c98938.png" /></td>
</tr>
and what I want to get and store in a variable in selenium is the record number 31

Answer 1

Using the 'store' command, you can execute javascript code in the 'target' column...
store | javascript{...} | myVar
where the ... is, substitute it with the js you need to return the id.
[Edit from Michael]
I ended up using:
storeAttribute | //*[#class='small']/a[text()='(Select)']/#href | hrefAttr
store | javascript{storedVars['hrefAttr'].replace(/.*\//,'')} | myVar
echo | ${myVar}
myVar now has the ID and I can do things like:
open
/users/change_district/${id_of_another_district}

Answer 2

The answer of sircapsalot (edited by Michael Durrant) is ok, but it's a bit different in my environment, regarding how the javascript is executed: not with javascript{...} So, in my case it looks like this and it works fine:
<tr>
<td>storeAttribute</td>
<td>//html/body/table/tbody/tr[3]/a#href</td>
<td>hrefAttr</td>
</tr>
<tr>
<td>storeEval</td>
<td>storedVars['hrefAttr'].replace(/.*=/,'')</td>
<td>transportIdVar</td>
</tr>
<tr>
<td>echo</td>
<td>${transportIdVar}</td>
<td></td>
</tr>
The href in my case looks like this:
http://example/local/IntegrationPick?partyId=8080595