title: how to set style to grid in extjs
body: <p>how to set style to grid so that it display font-family
  i am tring like this
     style: {'font-family': 'Brush Script MT',
             'font-weight': 'bold'<br>
             }
  but result does not show according to it.</p>
  
  <p>and i m also trying</p>
  
  <p>style:'font-family:Brush Script MT;
        font-size:300px', 
  but it also not show the result according to it..
  can u pls tell me why?                                    </p>