Scrollbar Is Not Showing In Textarea For Height:30px

I am helping my friend today. He came across an issue that he wants a textarea to display in a height of 30px with scrollbar. Unfortunately if we give a height to the textarea the

Solution 1:

.txtarea {
    overflow-y: visible
}

Also, The text area has to be at least ~70px high otherwise the box is too small to show the scrollbar.

http://jsfiddle.net/gTzPM/