Remaking Thumbnails

I edited the size of the thumbnail in one of the layouts for event listings. We had already had a bunch of events posted when I made the change. The images are blurry now. Is there any way I can get it to generate new thumbnails with the new size, without having to reupload the image to each event 1 at a time?
Fashion, Art & Culture (bostoneventguide.com)  <--- example of blurry thumbnails.

Hi Jeff

1. Login to administrator area of your site

2. Access to this URL

domain.com/administrator/index.php?optio....resize_thumb_images

Replace domain.com/administrator by administrator URL of your site

The system will re-generate thumbnail of events using new size. Clear browser cache, then check the original page again, the thumbnail with new size will be used

Regards,

Tuan

thumbs up on the thumbnails. Saved me so much work. Thank You!

You're welcome !

Tuan