I need to do a similar email template editor as Campaign Monitor have (http://www.campaignmonitor.com/templates/). I tried a lot of wysiwyg editors, but it doesn't work as i want.
Do you know which technologies are used? I don't know how to do a panel which will edit the content on a right side.
If you have some tips, good resources, articles, I'll be really glad!
Thank you in advance!