Prit,
I want to share the simplest way I found to populate alt tags on images, using post titles.
Having meaningful alt tags in images is basic to improve ranking / traffic from Google Images, and depending on the topic of your blog such traffic could be a significant one.
When using nicEdit you could certainly press the source code button and enter it manually, but thats not very practical.
The only you need to do, is to add a single line of code to 2 functions:
listPosts()
$content = str_replace('alt=""','alt="'.$title.'"',$entry[1]);
viewEntry()
$content = str_replace('alt=""','alt="'.$title.'"',$content);
I guess it will also help to improve your regular search engine ranking as well.