Usage :
 after install, right click the blank space of UrlBar > select Customize, 
 then drag "MY FindBar" from the palette to the UrlBar. 
 
- Select a text and presse press Ctrl + F to start My Findbar
  or type text in textbox.
- when textbox has focus,press Enter to find next,shift + Enter to find previous.
  or left + click "find Next"/"find previous" button.
- when "textbox" has focus,press Ctrl + Enter to toggle highlight.
  or Right + click "find previous" button.
- Right + click "find Next" button,search with default engine in new tab.
- Right + click "find Count" to toggle case sensitive.
- left + click "find Count" to clear "find Count" and "textbox".
-to clear hisory,left + click "Searchbar"(not My Findbar) and select "Clear Search Hisitory"
 or left + click "History",highlight text and press Delete key.
- For change highlight color,In the address bar, type about:config and press Enter.
  found parameter ui.textHighlightBackground
                  ui.textHighlightForeground
                  ui.textSelectBackgroundAttention
  and change to another value or reset to default,