Reset time in Pokemon G/S games

pokemonGS-time-reset.js

console.log('---');
	
// logic via: http://www.gamefaqs.com/gbc/446340-pokemon-silver-version/faqs/12550
// and http://upokecenter.dreamhosters.com/articles/pokemon-video-games/pokemon-gold-and-silver/changing-the-time-in-pokemon-gold-and-silver/#How_the_Game_Calculates_the_Password

function $(id) {
	return document.getElementById(id);
}

function generatePassword() {

	var name = $('trainer').value;
	var id = $('idno').value;
	var money = $('money').value;

	// constants
	var chars = {};
	chars[' '] = 127;
	chars['A'] = 128;
	chars['B'] = 129;
	chars['C'] = 130;
	chars['D'] = 131;
	chars['E'] = 132;
	chars['F'] = 133;
	chars['G'] = 134;
	chars['H'] = 135;
	chars['I'] = 136;
	chars['J'] = 137;
	chars['K'] = 138;
	chars['L'] = 139;
	chars['M'] = 140;
	chars['N'] = 141;
	chars['O'] = 142;
	chars['P'] = 143;
	chars['Q'] = 144;
	chars['R'] = 145;
	chars['S'] = 146;
	chars['T'] = 147;
	chars['U'] = 148;
	chars['V'] = 149;
	chars['W'] = 150;
	chars['X'] = 151;
	chars['Y'] = 152;
	chars['Z'] = 153;
	chars['a'] = 160;
	chars['b'] = 161;
	chars['c'] = 162;
	chars['d'] = 163;
	chars['e'] = 164;
	chars['f'] = 165;
	chars['g'] = 166;
	chars['h'] = 167;
	chars['i'] = 168;
	chars['j'] = 169;
	chars['k'] = 170;
	chars['l'] = 171;
	chars['m'] = 172;
	chars['n'] = 173;
	chars['o'] = 174;
	chars['p'] = 175;
	chars['q'] = 176;
	chars['r'] = 177;
	chars['s'] = 178;
	chars['t'] = 179;
	chars['u'] = 180;
	chars['v'] = 181;
	chars['w'] = 182;
	chars['x'] = 183;
	chars['y'] = 184;
	chars['z'] = 185;
	chars['-'] = 227;
	chars['?'] = 230;
	chars['/'] = 243;
	chars['.'] = 232;
	chars[','] = 244;
	chars['('] = 154;
	chars[')'] = 155;
	chars[':'] = 156;
	chars[';'] = 157;
	chars['['] = 158;
	chars[']'] = 159;
	chars['@'] = 225;
	chars['#'] = 226;
	chars['!'] = 231;
	chars['*'] = 241;

	// @ = PK
	// # = MN

	id = parseInt(id)
	money = parseInt(money)
	
	if (isNaN(id)) id = 0;
	if (isNaN(money)) money = 0;

	console.log(name, id, money);

	var r1 = 0;
	var len = name.length;
	len = len>5?5:len;
	for (var i=0; i<len; i++) {
		var c = name.charAt(i);
		console.log(c, chars[c]);
		r1 += chars[c];
	}
	console.log('r1', r1);


	while (money > 65535) {
		money -= 65535
	}
	var r2 = Math.floor(money/256) + (money%256);
	console.log('r2', r2);

	while (id > 65535) {
		id -= 65535
	}
	var r3 = Math.floor(id/256) + (id%256);
	console.log('r3', r3);

	var r = r1 + r2 + r3;
	var password = ('00000'+r).slice(-5);
	console.log('password', password);

	$('password').value = password;
}