如何动态改变list/menu的值!!!!!!!!!!!在线求救

Question

其实就是下拉框的联动，下面是我写的代码，应该不难看懂如何应用function addOption(Des,oValue,oText){
         var oOption = document.createElement("Option");
                 oOption.value=oValue;
                 oOption.text=oText;
                 document.all(Des).add(oOption);
}function delOption(Des){
         var j=document.all(Des).length;
                 while(j>0){
                    document.all(Des).remove(j-1);
                    j--;
                 }
}function change(parentstr,curstr){   //parentstr,curstr 父类 子类
             if( document.all(parentstr).value!=""){
            delOption(curstr);
            str=document.all("hid_"+curstr).value ;
            var ss;
            ss=str.split("$");
            addOption(curstr,"","--请选择--");
            for(i=0;i<ss.length;i++){
                       tmpstr=ss[i].split("#");
                       if (tmpstr[1]== document.all(parentstr).value){
                           addOption(curstr,tmpstr[0],tmpstr[2]);
                       }
                    }
       }
}

Answer 1

能不能具体说一下,我刚学!!
对了,表里面的数据是从数据库里面添加的!