<style type="text/css"> <!-- .over {color:yellow; background: navy} .down {color:yellow; background: navy; font-style: italic} --> </style> <input type="Button" value="点击看看这里很好玩的" name="Button" onMouseOver="this.className='over';" onMouseOut="this.className='';this.value='点击看看这里很好玩的'" onMouseDown="this.className='down';" onMouseUp="this.className='over';" onClick="this.value='我真的好喜欢你！欢迎常来看看哟.......这里还有好多好玩的.....'">