Regular expression

Hello list,

I have an output which contains the next lines:
========
</script><span style="display: none"
id="cell_1_teamtype_id">123</span><span style="display: none"
id="cell_1_region_id">543</span></td><td style="color: black;"
id="cell_1_3" class="table-even">ROT</td><td style="color: black;"
id="cell_1_2" class="table-even">unwanted line</td><td style="color:
black;" id="cell_1_4" class="table-even">lorum ipsum</td><td
style="color: black;" id="cell_1_5" class="table-even">1</td><td
style="color: black;" class="table-even" id="cell_1_6">some text</td><td
style="color: black;" id="cell_1_7" class="table-even"><a title="Toon
alle gebruikers in dit team"
href="javascript:goto_teamUsers('t1');">Gebruikers</a></td>
</script><span style="display: none"
id="cell_2_teamtype_id">234</span><span style="display: none"
id="cell_2_region_id">543</span></td><td style="color: black;"
id="cell_2_3" class="table-odd">AcBRW</td><td style="color: black;"
id="cell_2_2" class="table-odd">wanted line</td><td style="color:
black;" id="cell_2_4" class="table-odd">ipsum</td><td style="color:
black;" id="cell_2_5" class="table-odd">1</td><td style="color: black;"
class="table-odd" id="cell_2_6">some text</td><td style="color: black;"
id="cell_2_7" class="table-odd"><a title="Toon alle gebruikers in dit
team" href="javascript:goto_teamUsers('t2');">Gebruikers</a></td>
</script><span style="display: none"
id="cell_3_teamtype_id">345</span><span style="display: none"
id="cell_3_region_id">543</span></td><td style="color: black;"
id="cell_3_3" class="table-even">MK</td><td style="color: black;"
id="cell_3_2" class="table-even">wanted line</td><td style="color:
black;" id="cell_3_4" class="table-even">lorum</td><td style="color:
black;" id="cell_3_5" class="table-even">1</td><td style="color: black;"
class="table-even" id="cell_3_6">some text</td><td style="color: black;"
id="cell_3_7" class="table-even"><a title="Toon alle gebruikers in dit
team" href="javascript:goto_teamUsers('t3');">Gebruikers</a></td>
========

I want to extract id from teamUsers which will work with:
teamUsers\('([^']*)'\)
But I want to exclude the line which contains the text "unwanted line"

Does someone knows how to solve this puzzle?

Regards,
Peter