jQuery How display correct chose

I have one mistake, when i choose some variant. How show/hide something using only this tags and attributes correct ?

<span style="cursor:pointer;" class="editDocumentation" id="editDoc">
    <input type="radio" name="feature.needsDocumentation" value="true" checked="checked">yes&nbsp;&nbsp;
    <input type="radio" name="feature.needsDocumentation" value="false">no
</span>

I can't change tags