var ua = navigator.userAgent.toLowerCase();
if (ua.indexOf(" chrome/") >= 0 || ua.indexOf(" firefox/") >= 0 || ua.indexOf(' gecko/') >= 0) {
	var StringMaker = function () {
		this.str = "";
		this.length = 0;
		this.append = function (s) {
			this.str += s;
			this.length += s.length;
		}
		this.prepend = function (s) {
			this.str = s + this.str;
			this.length += s.length;
		}
		this.toString = function () {
			return this.str;
		}
	}
} else {
	var StringMaker = function () {
		this.parts = [];
		this.length = 0;
		this.append = function (s) {
			this.parts.push(s);
			this.length += s.length;
		}
		this.prepend = function (s) {
			this.parts.unshift(s);
			this.length += s.length;
		}
		this.toString = function () {
			return this.parts.join('');
		}
	}
}

function moosleep(milliseconds) {
  var start = new Date().getTime();
  for (var i = 0; i < 1e7; i++) {
    if ((new Date().getTime() - start) > milliseconds){
      break;
    }
  }
}

String.implement({
	encode64: function(){
		var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
		var input = this;

		var output = new StringMaker();
		var chr1, chr2, chr3;
		var enc1, enc2, enc3, enc4;
		var i = 0;

		while (i < input.length) {
			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.append(keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4));
	   }

	   return output.toString();
	},

	decode64: function(){
		var keyStr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
		var input = this;

		var output = new StringMaker();
		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, "");

		while (i < input.length) {
			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.append(String.fromCharCode(chr1));

			if (enc3 != 64) {
				output.append(String.fromCharCode(chr2));
			}
			if (enc4 != 64) {
				output.append(String.fromCharCode(chr3));
			}
		}

		return output.toString();
	}
});

window.addEvent('domready', function() {
	if (!Browser.Engine.trident) {
		document.body.addEvent('click:relay(span[class=timestamp_humano])', function(){
			Cookie.write('_timestamps_humanos', (Cookie.read('_timestamps_humanos') == 1 ? 0 : 1));

			$$('span[class=timestamp_humano]').each(function(item) {
				var temp = item.get('html');
				item.set('html', item.title);
				item.set('title', temp);
			});
		});
	}
});