JS集锦一
<SCRIPT language=javascript>
function switchSysBar(){
if (switchPoint.innerText==3){
switchPoint.innerText=4
document.all("mnuList").style.display="none"
top.content.cols="16,*"
}
else{
switchPoint.innerText=3
document.all("mnuList").style.display=""
top.content.cols="166,*"
}
}
</SCRIPT>
请教大家这一段JS是实现什么的呢
