HTML tag checker

Hi All,

I’m having a text area in my rails application as <%= f.text_area :text
%>. User allowed to enter HTML tags in that text area. I’m facing
following problems:

  1. Not able to check whether the HTML tags entered by user are correct
    or not i.e how to check whether the HTML tags are properly closed or not
    (<>).

  2. If the user copies the source code of any site and pastes it into
    above text field, the layout distracts.

Suggestions Appreciated…

Thanks and Regards

Saurabh P.