markitup changes the explicitly set size of textarea?

Question

I set up several textarea's with diffrent sizes as:

<textarea class="markItUp" rows="5" cols="80" name="upstring">

or

<textarea class="markItUp" rows="100" cols="80" name="upstring">

But after the markitup has been applied they are always resized to 18 rows. Why?

I have checked rows with firebug and its unchanged (still 5 or 100) so changing that wont help.

Since I have lots of texts I want to do small edits to I do not what to have a to small or to big area to start with since I already know the appropriate size.

Pleas help

Answer 1

After some playing around to understand things I produced the following code to solve my problem:

jQuery(".markItUp").markItUp(mySettings).css('height', function() {
  /* Since line-height is set in the markItUp-css, fetch that value and
  split it into value and unit.  */
  var h = jQuery(this).css('line-height').match(/(\d+)(.*)/)
  /* Multiply line-height-value with nr-of-rows and add the unit.  */
  return (h[1]*jQuery(this).attr('rows'))+h[2]
});