title: hiding crosstab columns in BIRT when format is excel
body: <p>I want to hide two of the crosstab columns based on some condition. I have been able to achieve it by using</p>
  
  <pre><code> function onPrepareCell( cell, reportContext )
   if(some condition){
      if( cell.getCellID() == cell#){
      cell.getStyle().setDisplay("none");
      }
    }
  </code></pre>
  
  <p>in the onPrepare event of cross tab. It works fine in PDF,HTML format but the columns are not getting hidden when the format is Excel. I need to get this done soon please help </p>