if tcompanyname ="" then%>
<script language="vbScript">msgbox "对不起,公司名不能为空!"
window.history.go(-1)
</script>
<% response.End()
end if
if tcustomername ="" then%>
<script language="vbScript">msgbox "对不起,用户名不能为空!"
window.history.go(-1)
</script>
<%response.End()
end if
if tcustomertel ="" then%>
<script language="vbScript">msgbox "对不起,电话号码不能为空!"
window.history.go(-1)
</script>
<%response.End()
end if
if tproduct ="" then%>
<script language="vbScript">msgbox "对不起,产品型号不能为空!"
window.history.go(-1)
</script>
<%response.End()
end if
if tproductn ="" then%>
<script language="vbScript">msgbox "对不起,定做数量不能为空!"
window.history.go(-1)
</script>
<%response.End()
end if
if tspdate ="" then%>
<script language="vbScript">msgbox "对不起,交货日期不能为空!"
window.history.go(-1)
</script>
<%response.End()
end if