document.all是什么意思
<style>#idParentDiv{width:100%;height:80px;padding:6px;background-color:buttonshadow;}
#idDiv{width:80%;height:60px;background-color:#FF6633;color:#FFFFFF;padding:6px;}
#idCodeDiv{width:100%;padding:4px;font-family:verdana,tahoma;margin:12px 0px 0px 0px;background-color:#EEEEEE;font-weight:bold;}
</style>
<script>
function rdl_change(e){
var oCodeDiv=document.all("idCodeDiv");
var oDiv=document.all("idDiv");
with (document.all("idSel")) var sValue=options[selectedIndex].value;
oDiv.style.overflow=sValue;
oCodeDiv.innerText="overflow : "+sValue+" ; ";
}
</script>
<div id=idParentDiv>
<div id=idDiv><img src="images/rdl_nice.gif" style="float:left;" width=89 height=120>请选择我的<b> overflow </b>属性的值。</div>
</div>
<br>
<select id="idSel" onchange="rdl_change();">
<option value="visible" style="font-weight:bold;">---请选择---
<option value="hidden">hidden
<option value="scroll">scroll
<option value="auto">auto
<option value="visible">visible
</select>
<div id=idCodeDiv>overflow : visible ; </div>
document.all是属于DHTML的内容还是JAVASCRIPT
