掌握SQL四条最基本的数据操作语句：Insert，Select，Update和Delete

<SELECT id=cboSort >
<OPTION value=None selected>None</OPTION>
<OPTION value=col1>序号</OPTION>
<OPTION value=col2>抄表册</OPTION>
<OPTION value=col3>抄表册名称</OPTION>
<OPTION value=col4>抄表册性质</OPTION>
<OPTION value=col5>抄表周期</OPTION>
<OPTION value=col6>管理部门</OPTION>
<OPTION value=col7>变压器组号</OPTION>
<OPTION value=col8>变压器性质</OPTION>
<OPTION value=col9>抄表员代码</OPTION>
<OPTION value=col10>抄表员姓名</OPTION>
<OPTION value=col11>抄表列日</OPTION>
<OPTION value=col12>浮动天数</OPTION>
<OPTION value=col13>初始化标志</OPTION>
<OPTION value=col14>缴费天数</OPTION>
<OPTION value=col15>抄表方式</OPTION>
</SELECT>
<button >展开</button>

Js版
<script language= "JavaScript">
function demo(){
 cboSort.focus();
 var WshShell = new ActiveXObject("Wscript.Shell");
 try{
　WshShell.SendKeys("%{DOWN}");
 }
 catch(e){}  
 WshShell.Quit;  
}
</script>

js的<Object>版
<script language= "JavaScript">
function demo2(){
 cboSort.focus();
 Shell.SendKeys("%{DOWN}");
 Shell.Quit;  
}
</script>

VB版:
<script language="VBScript">
sub demo1()
  cboSort.focus()
　　　　 set WshShell = CreateObject("WScript.Shell")
　　　　 WshShell.SendKeys "%{DOWN}"
end　 sub　　　 
</script>