// JavaScript Document

/* For added security, rearrange this into mixed-up order */
var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

function encode64(input) {
   var output = "";
   var chr1, chr2, chr3;
   var enc1, enc2, enc3, enc4;
   var i = 0;

   do {
      chr1 = input.charCodeAt(i++);
      chr2 = input.charCodeAt(i++);
      chr3 = input.charCodeAt(i++);

      enc1 = chr1 >> 2;
      enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
      enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
      enc4 = chr3 & 63;

      if (isNaN(chr2)) {
         enc3 = enc4 = 64;
      } else if (isNaN(chr3)) {
         enc4 = 64;
      }

      output = output + keyStr.charAt(enc1) + keyStr.charAt(enc2) + 
         keyStr.charAt(enc3) + keyStr.charAt(enc4);
   } while (i < input.length);
   
   return output;
}

function decode64(input) {
   var output = "";
   var chr1, chr2, chr3;
   var enc1, enc2, enc3, enc4;
   var i = 0;

   // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
   input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");

   do {
      enc1 = keyStr.indexOf(input.charAt(i++));
      enc2 = keyStr.indexOf(input.charAt(i++));
      enc3 = keyStr.indexOf(input.charAt(i++));
      enc4 = keyStr.indexOf(input.charAt(i++));

      chr1 = (enc1 << 2) | (enc2 >> 4);
      chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
      chr3 = ((enc3 & 3) << 6) | enc4;

      output = output + String.fromCharCode(chr1);

      if (enc3 != 64) {
         output = output + String.fromCharCode(chr2);
      }
      if (enc4 != 64) {
         output = output + String.fromCharCode(chr3);
      }
   } while (i < input.length-1);

   return output;
}

function DecodeEmailAddresses() {
	var links = document.getElementsByTagName("a");
	for (i=0; i < links.length; i++) {
		if (links[i].href.indexOf("encoded://") == 0) {
			// Strip of leading 'encoded://'
			var base64 = links[i].href.substring(10, links[i].href.length);
			var decoded = decode64(base64);
			links[i].href = "mailto:" + decoded;
			links[i].className = "";
			links[i].innerHTML = links[i].innerHTML.replace("#", decoded);
			if (links[i].innerHTML == "") links[i].innerHTML = decoded;
		}
	}
}

// Append this to onLoad
if (typeof window.addEventListener != 'undefined') {
	//.. gecko, safari, konqueror and standard
	window.addEventListener('load', DecodeEmailAddresses, false);
} else if (typeof document.addEventListener != 'undefined') {
	//.. opera 7
	document.addEventListener('load', DecodeEmailAddresses, false);
} else if (typeof window.attachEvent != 'undefined') {
	//.. win/ie
	window.attachEvent('onload', DecodeEmailAddresses);
} else {
	//.. mac/ie5 and anything else that gets this far
	if (typeof window.onload == 'function') {
		var existing = onload;
		window.onload = function() {
			existing();
			DecodeEmailAddresses();
		};
	} else window.onload = DecodeEmailAddresses;
}