var decryption_cache = new Array();

function decrypt_string(crypted_string,n,decryption_key,just_email_address) {
	var cache_index = "'"+crypted_string+","+just_email_address+"'";

	if(decryption_cache[cache_index])					// If this string has already been decrypted, just
		return decryption_cache[cache_index];				// return the cached version.

	if(addresses[crypted_string])						// Is crypted_string an index into the addresses array
		var crypted_string = addresses[crypted_string];			// or an actual string of numbers?

	if(!crypted_string.length)						// Make sure the string is actually a string
		return "Error, not a valid index.";

	if(n == 0 || decryption_key == 0) {					// If the decryption key and n are not passed to the
		var numbers = crypted_string.split(' ');			// function, assume they are stored as the first two
		n = numbers[0];	decryption_key = numbers[1];			// numbers in crypted string.
		numbers[0] = ""; numbers[1] = "";				// Remove them from the crypted string and continue
		crypted_string = numbers.join(" ").substr(2);
	}

	var decrypted_string = '';
	var crypted_characters = crypted_string.split(' ');

	for(var i in crypted_characters) {
		var current_character = crypted_characters[i];
		var decrypted_character = exponentialModulo(current_character,n,decryption_key);
		if(just_email_address && i < 7)				// Skip 'mailto:' part
			continue;
		if(just_email_address && decrypted_character == 63)	// Stop at '?subject=....'
			break;
		decrypted_string += String.fromCharCode(decrypted_character);
	}
	
	decryption_cache[cache_index] = decrypted_string;			// Cache this string for any future calls

	return decrypted_string;
}

function decrypt_and_email(crypted_string,n,decryption_key) {
	if(!n || !decryption_key) { n = 0; decryption_key = 0; }
	if(!crypted_string) crypted_string = 0;

	var decrypted_string = decrypt_string(crypted_string,n,decryption_key,false);
	parent.location = decrypted_string;
}

function decrypt_and_echo(crypted_string,n,decryption_key) {
	if(!n || !decryption_key) { n = 0; decryption_key = 0; }
	if(!crypted_string) crypted_string = 0;

	var decrypted_string = decrypt_string(crypted_string,n,decryption_key,true);
	document.write(decrypted_string);
	return true;
}

function exponentialModulo(base,exponent,y) {
	if (y % 2 == 0) {
		answer = 1;
		for(var i = 1; i <= y/2; i++) {
			temp = (base*base) % exponent;
			answer = (temp*answer) % exponent;
		}
	} else {
		answer = base;
		for(var i = 1; i <= y/2; i++) {
			temp = (base*base) % exponent;
			answer = (temp*answer) % exponent;
		}
	}
	return answer;
}

if(!addresses) var addresses = new Array();
addresses.push("8509 6653 1970 6403 4854 7640 5192 4635 6544 7640 4854 7640 1495 8132 1966 4935 6184 5192 4854 7640 4854 5083 4635 2631 3847 4635 1970 6346 6184 3759 3669 6823 4935 3847 5192 1470 2869 4854 1482 4635 7640 4854 5192 4935 3295 3445 3185 4935 7958 4854 1291 3759 4935");
addresses.push("22331 8813 1901 21200 1526 18712 16857 10909 4016 12365 18757 2856 7258 2973 13270 17333 2856 10430 7072 10628 18757 10628 5593");
addresses.push("5123 2981 654 3721 3554 4468 2855 4828 3131 1476 587 5003 1317 4679 3905 780 5003 3275 2788 830 1317 5003 3275");
addresses.push("2291 437 390 994 566 379 522 1631 1305 25 1631 2201 390 994 25 354 526 354 541 840 522 566 379 566 25 1631 2076 737 1631 390 544 840 2118 1029 137 541 737 522 823 997 566 136 1631 379 566 522 541 880 446 2022 541 647 566 1497 2118 541");