Display joomla 2.5 system messages

Hi I need some help to display joomla system messages on my website without reloading the page and stop redirecting users when they fail to login. I have a custom login and register module on the main page, and it redirects users to another page to display all the system messages. (see attached image) My total budget for this is $30 Thank you! Additional Project Description: 03/29/2012 at 22:08 EDT: 1.- Stop the redirection at login/register failure 2.- Display system messages above the module at the main page without reloading