<table class="socialheader" width="100%" border="0">

<tr> <td width="85%" align="left" nowrap>The Three Sisters, Glen Coe</td> </tr>

</table>

I have over 2500 pages with the above HTML in ( the "Three Sisters, Glen Coe" bit is different in every file) and I want to add two lines so:

<table class="socialheader" width="100%" border="0">

<tr> <td width="85%" align="left" nowrap>The Three Sisters, Glen Coe</td> <One new line here> <Another new line here> </tr>

</table>

The pair of lines to be inserted is identical in each case but the only unique identifier is the "class=socialheader".

Is there any way I can do it with a script?