title: Removing underline style for a4j:commandLink
body: <p>Version : </p>
  
  <p>Apache MyFaces 2.0
  Rich Faces 4.3</p>
  
  <p>Issue : </p>
  
  <p>We are migrating from JSF 1.2 to JSF 2.</p>
  
  <p>As there is no built-in support for sorting for rich:dataTable , we are using custom sorting solution as per rich faces <a href="http://showcase.richfaces.org/richfaces/component-sample.jsf?demo=dataTable&amp;sample=tableSorting&amp;skin=blueSky" rel="nofollow">showcase</a>.
  The sorting works fine , only issue is since a4j:commandLink is used for sort action trigger , the column header text is coming with "underline" style.
  Is there any way the underline can be removed for <code>a4j:commandLink</code> ? 
  The rich faces showcase doesn't show any styling for <code>a4j:commandLink</code> ? </p>
  
  <p>Please help. </p>