document.write(" "); function formlogin_onsubmit() { if (formlogin.UsersName.value.replace(/ /g,"")=="") { alert("请输入帐号?"); formlogin.UsersName.focus(); return false; } if (formlogin.Password.value.replace(/ /g,"")=="") { alert("请输入密码!"); formlogin.Password.focus(); return false; } if (formlogin.VerifyCode.value.replace(/ /g,"")=="") { alert("请输入验证码!"); formlogin.VerifyCode.focus(); return false; } return true; } function window_onload() { document.formlogin.UsersName.focus(); } document.write("