关于select下拉框的问题，急等各位高手解决

解决方案 »

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请看页面很多垃圾代码,
请多检查的啊,eg:
<body>
<script language="javascript">
function check()
{
if (document.form1.id.value=="")
{
alert("对不起，记录号未填写，请填写！");
document.form1.id.focus()
return false;
}
if (document.form1.wtdw.value=="")
{
alert("对不起，送检单位未选择，请选择！");
document.form1.wtdw.focus()
return false;
}
if (document.form1.xhgg.value=="")
{
alert("对不起，型号规格未选择，请选择！");
document.form1.xhgg.focus()
return false;
}
}
</script>
<style type="text/css">

</style><form name="form1" method="post" action="add.asp?action=ok" >
<table width="100%" border="0" cellspacing="1" cellpadding="2">
<tr bgcolor="#4E5960">
<td height="20" align="center" class="heading"><font color="#FFFFFF" class="STYLE2"><b>证书 / 报告录入</b></font></td>
</tr>
</table>
<table width="100%" border="1" cellspacing="0" cellpadding="1" bordercolordark="#FFFFFF" bordercolor="#000000">
<tr>
<td colspan="2" bgcolor="#bfbfbf">
<div align="left" class="STYLE2">测量设备信息</div> </td>
</tr>
<tr>
<td width="18%" bgcolor="#bfbfbf">
<div align="center" class="STYLE2">id：</div> </td>
<td width="82%" bgcolor="#efefef">
<input name="id" type="text" class="STYLE2" value="" size="20" maxlength="20"> </td>
</tr>
<tr>
<td width="18%" bgcolor="#bfbfbf">
<div align="center" class="STYLE2">委托单位：</div> </td>
<td width="82%" bgcolor="#efefef">
<input name="wtdw" type="text" class="STYLE2" value="" size="60" maxlength="200"></td>
</tr>
<tr>
<td width="18%" bgcolor="#bfbfbf">
<div align="center" class="STYLE2">测量设备名称：</div> </td>
<td width="82%" bgcolor="#efefef">
<input name="sbmc" type="text" class="STYLE2" value="" size="30" maxlength="100"> </td>
</tr>
<tr>
<td width="18%" bgcolor="#bfbfbf">
<div align="center" class="STYLE2">型号规格：</div> </td>
<td width="82%" bgcolor="#efefef" nowrap><input name="xhgg" type='xhgg'class="STYLE2" id='xhgg' style="position:relative;width:300px; top:-1px;" onFocus="this.value='';document.form1.xhgg1.value='';" value="">
<select name="xhgg1" class="STYLE2" id="xhgg1" style="position:absolute;left:176;width:300px; clip:rect(0 300 278 278);" onchange="document.form1.xhgg.value = document.form1.xhgg1.value">
<option value=''></option>
<option value='1'> 1 </option>
<option value='2'> 2 </option>
<option value='3'> 3 </option>
<option value='4'> 4 </option>
</select>
</td>
</tr>
<tr>
<td colspan="2" bgcolor="#bfbfbf">
<div align="center" class="STYLE1">
<label>
<input name="okclick" type="button" class="STYLE2" id="okclick" onclick="check()" value="录入记录" />
<input name="reset" type="button" class="STYLE2" id="button" value="取消" />
<input name="return" type="button" class="STYLE2" id="button" value="返回主页面" />
</td>
</tr>
</table>
</form>
</body>