IE与火狐兼容问题

Question

                Response.Write("<form id='alipaysubmit' name='alipaysubmit' method='post' action=' https://www.xxxxxxx.com/coopte/gatay.do?_input_charset=utf-8'>");
                Response.Write("<input type='hidden' name='service' value=" + service + ">");
                Response.Write("<input type='hidden' name='partner' value=" + partner + ">");
                Response.Write("<input type='hidden' name='seller_email' value=" + seller_email + ">");
                Response.Write("<input type='hidden' name='out_trade_no' value=" + out_trade_no + ">");
                Response.Write("<input type='hidden' name='subject' value=" + subject + ">");
                Response.Write("<input type='hidden' name='body' value=" + body + ">");
                Response.Write("<input type='hidden' name='total_fee' value=" + total_fee + ">");
                Response.Write("<input type='hidden' name='show_url' value=" + show_url + ">");
                Response.Write("<input type='hidden' name='return_url' value=" + return_url + ">");
                Response.Write("<input type='hidden' name='notify_url' value=" + notify_url + ">");
                Response.Write("<input type='hidden' name='payment_type' value=1>");
                Response.Write("<input type='hidden' name='sign' value=" + aliay_url + ">");
                Response.Write("<input type='hidden' name='sign_type' value=" + sign_type + ">");                              
                Response.Write("</form>");
                Response.Write("<script>");             
                Response.Write("document.alipaysubmit.submit()");
                Response.Write("</script>");以上代码在火狐中运行提示：错误： document.alipaysubmit is undefined 
IE中运行正常，谁能帮解决下

Answer 1

有必要這麼多Response.Write??
(我沒玩過asp)1.document.getElementById('alipaysubmit')
2.document.getElementsByName('alipaysubmit')[0]
3.document.getElementsByTagName('form')[0]
4.document.forms[0]

Answer 2

document.alipaysubmit.submit();
document.forms[0].submit(); 不知道