I am looking to find a way using jquery / html / or even css to do the following. 

My text area is fixed size, 1 font size/type, and I want to be able to do the following.

* Limit number of lines to 18 lines
* Display the number of lines the user has used so far (Kind of like twitter approach with characters but displaying lines used)

**Line Definition:** A line for my project is either when the user presses enter on the keyboard and goes to a new line, OR when a new row / line is created in the textarea by naturally typing continuously int he textarea. I basically have a fixed size textarea and the user cannot go outside these limits I set.