button줄바꿈

<input type="button" value="Really&#x00A;Tall&#x00A; Button">
// this is not work on IE etc...

<input style="width:100px;white-space: normal;" type="button"
value="kkkkkk kkkkkkk kkkkkkkkk">

// it works perfectly.
// but it could not works that i want

<button style="width:250px;">Online Registration<br>(For International Participants</button>

// finally ... not bad.

// 하지만 overflow 시에는 직접 잘라줘야함.