abdolmajed baloch

easy adding very good tooltip on your blog. 
http://yonadi.com 
http://iran98.org/
add tooltip on your blog.
use your wanted style if you dont like this style or color

auto tooltip

easy adding very good tooltip on your blog. http://yonadi.com http://iran98.org/

Christiaan Conover

<a href="http://www.kevinmarks.com/fragmentions.html" rel="nofollow ugc">Fragmention</a> is a method of linking to any text in a web page proposed by Kevin Marks. It uses a double hash syntax appended to a URL with the text following the two hash marks, using plus symbols to replace spaces. For example:
<a href="http://www.kevinmarks.com/fragmentions.html##I+suggest+using+a+double+hash" rel="nofollow ugc">http://www.kevinmarks.com/fragmentions.html##I+suggest+using+a+double+hash</a>
This removes the need for site developers to hard-code ID attributes into their site’s tags and gives users a completely flexible way to point to exactly the text they want to reference within a page.
<a href="https://github.com/cconover/wp-fragmention" rel="nofollow ugc">Github repo</a>

WP Fragmention

Add support for Fragmention links to WordPress.

auto tooltip vs WP Fragmention