function gook() { var S; S = document.getElementById("usernameshow"); if (S.value == "") { alert("用户名不可为空"); S.focus(); return ; } S = document.getElementById("pwshow"); if (S.value == "") { alert("密码不可为空"); S.focus(); return ; } S = document.getElementById("usernameshow"); document.f1.username.value = S.value; //S = document.getElementById("showsaveUser"); document.f1.saveUser.value = false; //S = document.getElementById("showSecEx"); document.f1.SecEx.value = false; S = document.getElementById("pwshow"); document.f1.pwhidden.value = encode(S.value, parseInt(document.f1.picnum.value)); document.f1.submit(); } function encode(datastr, bassnum) { var tempstr; var tchar; var newdata = ""; for (var i = 0; i < datastr.length; i++) { tchar = 65535 + bassnum - datastr.charCodeAt(i); tchar = tchar.toString(); while(tchar.length < 5) { tchar = "0" + tchar; } newdata = newdata + tchar; } return newdata; } document.writeln("