Datatable header customization

Hi,
I want to define a different template for the dataTable header , Is it possible for me to define the template as raw html.
can you point me towards some references

You can redefine the content of header and data cells.

The HTML of header itself ( TR and TD tags ) can’t be altered.

Is there an example that I can see

Header can be defined via object definition, which makes it possible to set text and css separately.

columns:[
       {id:"title", header:{text:"<b>Title</b>", css:"header"}},
       {id:"checked", header:{
          text:"<div class='cell'>Checked</div>", 
          css:{"font-style":"italic"}}
       }
 ]

http://webix.com/snippet/373485d1

Thanks