title: Freeze Panes in HTML opened in Excel
body: <p>My application exports data to Excel as HTML.</p>
  
  <p>It saves the markup of an HTML table in a temporary file (using xls as an extension). It then asks the operating system to open that file using its native application.</p>
  
  <p>Excel can open it without a problem. I have even been able to get some formatting via CSS.</p>
  
  <p>I would like the top x rows not to scroll. I was wondering if there was a way of achieving a "freeze panes" effect? I have tried using the <code>thead</code> and <code>tbody</code> tags but it does not help.</p>
  
  <p>I am programming this in ActionScript. However the language used to generate the markup in the text file is irrelevant. What is important is the markup itself.</p>