DIV (or somthing) Work like textbox

Hello,

this is a little complicated but I hope I can explain this well enough to get a good answer.

So, what I need is a div, or something to display text like a text box, including all the spaces and enters and things that would normally show up in a text box, but still work with HTML code, like links and things, and display those correctly. I am creating a user message system that has some basic HTML features, such as links and stuff, but when I use it as a div, its all on one line and stuff.. Also, another side note, is there a way to protect me from other users putting HTML code in the messages, and it running when they view the mail? All I want it to do is display the HTML code the functions generate before the message is loaded to the client. (PHP) If you have any other questions, please ask.

Thanks

http://www.tinymce.com/ might be what you are after.