为什么z-index=1出错(CSS)
dabou 2001-09-29 01:29:42 <div id ="onediv"
style="position : absolute; left:29; top:39;z-index:-1;"
onmousedown="dd()" onmouseup="up()" >
<img id="ff" border="0" src="mai0.gif" width="54" height="58"></span></p>
</div>
<input type=button value=Button onClick="onediv.style.top=1"> 不出错
换成
<input type=button value=Button onClick="onediv.style.z-index=1"> 就出错
我百思不得其解,请大师指点