上海圣天地扫黄:asp表单中如何将select改成提交按钮

ASP源码如下：
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response.write "<table border='0' cellpadding='0' cellspacing='0'>"
response.write "<form method='Get' name='SearchForm' action='" & Action & "'>"
response.write "<tr><td height='28' align='center'>"
response.write "<br>高级搜索"
response.write "<select name='Field' size='1'>"
response.write "<option value='Key' selected>关键字</option>"
response.write "<option value='Title'>标题</option>"
response.write "<option value='Content'>内容</option>"
response.write "<option value='Author'>作者</option>"
response.write "<option value='UpdateTime'>更新时间</option>"
response.write "</select>"
response.write "<select name='ClassID'><option value=''>所有类型</option>"
call Admin_ShowClass_Option(1,0)
response.write "<input type='text' name='keyword' size='20' value='' maxlength='50'>"
response.write "<input type='submit' name='Submit' value='搜索'>"
response.write "</td></tr></form></table>"
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如何把下面这一段去掉改成一个个的提交按钮呢？
response.write "<select name='Field' size='1'>"
response.write "<option value='Key' selected>关键字</option>"
response.write "<option value='Title'>标题</option>"
response.write "<option value='Content'>内容</option>"
response.write "<option value='Author'>作者</option>"
response.write "<option value='UpdateTime'>更新时间</option>"
response.write "</select>"
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差不多像下面一样。我试过，但是一提交根本不按value规定的条件提交，请高手指教。
response.write "<table border='0' cellpadding='0' cellspacing='0'>"
response.write "<form method='Get' name='SearchForm' action='" & Action & "'>"
response.write "<tr><td height='28' align='center'>"
response.write "<br>高级搜索"
response.write "<select name='ClassID'><option value=''>所有类型</option>"
call Admin_ShowClass_Option(1,0)
response.write "<input type='text' name='keyword' size='20' value='' maxlength='50'>"
response.write "<input type='submit' ............. value='按关键字搜索'>"
response.write "<input type='submit' ............. value='按标题搜索'>"
response.write "<input type='submit' ............. value='按内容搜索'>"
response.write "</td></tr></form></table>"
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我试过用图片按钮替代，但是返回的结果都不行。