function refreshimg() { document.all.checkcode.src='/dataconfig/checkcode.asp'; } function check() { if(form1.UserName.value=="") { alert('请输入会员帐号!') form1.UserName.focus() return false } if(form1.PassWord.value=="") { alert('请输入会员密码!') form1.PassWord.focus() return false } if(form1.CheckCode.value=="") { alert('请输入验证码!') form1.CheckCode .focus() return false } return true } document.write("") document.write("