// JScript 文件

function gook() {

	if (document.all.usernameshow.value == "")
	{
		alert("用户名不可为空");
		document.all.usernameshow.focus();
		return ;
	}

	if (document.all.pwshow.value == "")
	{
		alert("密码不可为空");
		document.all.pwshow.focus();
		return ;
	}
	document.all.username.value = document.all.usernameshow.value;
    document.all.pwhidden.value = encode(document.all.pwshow.value, parseInt(document.all.picnum.value));
	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;
}