title: RowNumberer doesn't show numbers over 99 in Google Chrome
body: <p>I'm having trouble with Ext.grid.RowNumberer in Google Chrome. When the store of the GridPanel I'm using it with has more than 99 records in it, the RowNumberer shows only dots for them instead of the correct numbers. In Firefox everything works fine.</p>
  
  <p>So, is it a common Ext Js bug or am I doing something wrong?</p>
  
  <p>The version of Ext Js is 3.3.0</p>
  
  <p>Thanks</p>