<script>
    function Show_BlkBlackTab(BlkBlackTabid_num,BlkBlackTabnum){
    for(var i=0;i<4;i++){document.getElementById("BlkBlackTabcontent_"+BlkBlackTabid_num+i).style.display="none";}
    for(var i=0;i<4;i++){document.getElementById("BlkBlackTabmenu_"+BlkBlackTabid_num+i).className="BlkBlackTabOff";}
    document.getElementById("BlkBlackTabmenu_"+BlkBlackTabid_num+BlkBlackTabnum).className="BlkBlackTab";
    document.getElementById("BlkBlackTabcontent_"+BlkBlackTabid_num+BlkBlackTabnum).style.display="block";
}   
</script>
我只知道这样做可以出现的结果但不知道是什么意思```
哪位大哥可以告诉我啊

晕```
没人帮忙啊``