Change content on sharer.php of facebook

See more:

Facebook-API

WordPress

I am using this widget 'Top Area Social Media' on my site http://69.195.124.176/~osormcom/[^].
I have to change the content and title displayed on sharer.php of facebook.
Current code in my widget

<a href="http://www.facebook.com/sharer.php?u=http://69.195.124.176/~osormcom/" title="Facebook" target="_blank">
<img src="http://69.195.124.176/~osormcom/wp-content/themes/udesign231/u-design/styles/common-images/facebook-icon.png" alt="facebook" border="0" />
</a>

also tried with

http://www.facebook.com/sharer.php?s=100&p[url]=http://www.example.com/&p[images][0]=/images/image.jpg&p[title]=Title&p[summary]=Summary

no luck yet.