make the user can't control the size of text area [duplicate]

This question already has开发者_如何学Go answers here: Closed 11 years ago.

Possible Duplicate:

Hiding textarea resize handle in Safari

in textarea input the user can change the size of the input area how to make him can't do that,if it is no possible ,then how i can make the text input field add new line,that is when the user add to the end of the text field a new line entered and the size of the text field increase

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CSS:

textarea {
    resize: none;
}

Source: Google(disable textarea resize)