How to Add "Search this site" Widget/Gadget For Your Blog?

I have found a wonderfully simple search  widget which operates in a similar way to "search this blog". You can easily implement this widget to your blog by doing and following these simple steps:
Install "search this blog" widget:

1.Go to Template>Layout in your Blogger Dashboard.

2.Create a new HTML/Java script element in your side bar.

3.Insert the following code into the widget:

<p align="center"><form id="searchthis" action="/search" style="display:inline;" method="get"> <input id="search-box" name="q" size="25" type="text"/> <input id="search-btn" value="Search" type="submit"/> </form></p>

4.Give your widget a title if you like (eg: "Search this Blog"), and click save. You should now have a fully functional search box in your blog's sidebar!

 So, if you prefer something simpler than the Google blog search I wrote about before, this is surely the widget for you.