<script type="text/javascript">
var fromUrl="<%=request.servervariables("HTTP_REFERER")%>";//获取来源页面的地址
window.location.reload(fromUrl);//再转向到获取的地址
</script>
<script type="text/javascript">
alert ('你已收藏过该投标');location.href='$_SERVER[HTTP_REFERER]';
</script>