input type file 이미지 버튼으로

function change()
{
        document.p_form.filename.value=document.p_form.photo.value;
}

<input type="text" name="filename" size="30" class="orange">
<span style='overflow:hidden; width:72; height:22;background-image:url(images/btn_photo.gif);'>
<input type="file" name="photo" size="30" style='width:0; height:19; filter:alpha(opacity=0);'
onChange="javascript:change()">
</span>

출처 : http://taeyo.pe.kr/threadboard/Content.asp?table=Board_Asp&seqs=132803&page=1&IsSearch=true