replace question

Hello,

I have a replace question. I use a text editor and when I insert an image the code is looking like: <img src="/webimages/pic.jpg">. I looking for a replace tag that checks the input of the textarea and replace all <img src="/webimages/....jpg"> to <img src="http://www.domain.com/webimages/...jpg"> when saving the text.

Is that possible?

Thanks.

Samall