var BBComWidget = (function ($DOC, $WINDOW) {

		return {

			getElementsByClassName: function(cl, scope) {
				if ( typeof scope === undefined ) {
					scope = '*';
				}
				var retnode = [],
				myclass = new RegExp('\\b'+cl+'\\b'),
				elem = document.getElementsByTagName(scope);
				for (var i = 0; i < elem.length; i++) {
					var classes = elem[i].className;
					if (myclass.test(classes)) {
						retnode.push(elem[i]);
					}
				}
				return retnode;
			},

			include: function ( filename ) {
				var head = $DOC.getElementsByTagName('head')[0],
				script = $DOC.createElement('script');
				script.src = filename;
				script.type = 'text/javascript';
				head.appendChild(script);
			},

			base64: {
			    // private property
			    _keyStr : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
			    // public method for encoding
			    encode : function (input) {
					if ( typeof input === 'undefined' ) {
						return null;
					}
			        var output = "";
			        var chr1, chr2, chr3, enc1, enc2, enc3, enc4;
			        var i = 0;
			        input = BBComWidget.base64._utf8_encode(input);
			        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 = output + this._keyStr.charAt(enc1) + this._keyStr.charAt(enc2) + this._keyStr.charAt(enc3) + this._keyStr.charAt(enc4);
			        }
			        return output;
			    },
			    // public method for decoding
			    decode : function (input) {
					if ( typeof input === 'undefined' ) {
						return null;
					}
			        var output = "",
			        chr1, chr2, chr3,
			        enc1, enc2, enc3, enc4,
			        i = 0;
			        input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
			        while ( i < input.length ) {
			            enc1 = this._keyStr.indexOf(input.charAt(i++));
			            enc2 = this._keyStr.indexOf(input.charAt(i++));
			            enc3 = this._keyStr.indexOf(input.charAt(i++));
			            enc4 = this._keyStr.indexOf(input.charAt(i++));
			            chr1 = (enc1 << 2) | (enc2 >> 4);
			            chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
			            chr3 = ((enc3 & 3) << 6) | enc4;
			            output += String.fromCharCode(chr1);

						if ( enc3 != 64 ) {
			                output += String.fromCharCode(chr2);
						}

			            if ( enc4 != 64 ) {
			                output += String.fromCharCode(chr3);
						}
			        }
			        output = BBComWidget.base64._utf8_decode(output);
			        return output;
			    },
			    // private method for UTF-8 encoding
			    _utf8_encode : function (string) {
					if ( typeof string === 'undefined' ) {
						return null;
					}
			        string = string.replace(/\r\n/g,"\n");
			        var utftext = "";
			        for (var n = 0; n < string.length; n++) {
			            var c = string.charCodeAt(n);
			            if ( c < 128 ) {
			                utftext += String.fromCharCode(c);
						}
			            else if ( (c > 127) && (c < 2048) ) {
			                utftext += String.fromCharCode((c >> 6) | 192);
			                utftext += String.fromCharCode((c & 63) | 128);
			            }
			            else {
			                utftext += String.fromCharCode((c >> 12) | 224);
			                utftext += String.fromCharCode(((c >> 6) & 63) | 128);
			                utftext += String.fromCharCode((c & 63) | 128);
			            }
			        }
			        return utftext;
			    },
			    // private method for UTF-8 decoding
			    _utf8_decode : function (utftext) {
					if ( typeof utftext === 'undefined' ) {
						return null;
					}
			        var string = "",
			        i = 0,
			        c = 0,
					c1 = 0,
					c2 = 0,
					c3 = 0;
			        while ( i < utftext.length ) {
			            c = utftext.charCodeAt(i);
			            if (c < 128) {
			                string += String.fromCharCode(c);
			                i++;
			            }
			            else if((c > 191) && (c < 224)) {
			                c2 = utftext.charCodeAt(i+1);
			                string += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
			                i += 2;
			            }
			            else {
			                c2 = utftext.charCodeAt(i+1);
			                c3 = utftext.charCodeAt(i+2);
			                string += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
			                i += 3;
			            }
			        }
			        return string;
			    }
			},

			requestStyleSheet: function ( styleSheetURL ) {

				var styleSheet = $DOC.createElement('link');
					styleSheet.rel = 'stylesheet';
					styleSheet.type = 'text/css';
					styleSheet.href = styleSheetURL;
					styleSheet.media = 'all';
					$DOC.body.appendChild(styleSheet);

			},

			error: function ( ) {

				throw new Error('We appologize but the <a href="http://www.bodybuilding.com">BodyBuilding.com</a> widget could not be loaded.');

			},

			render: function ( json ) {

				if ( typeof json === undefined || typeof json.id === undefined || typeof json.request === undefined ) {

					BBComWidget.error();
					return false;

				}
				var seed = Math.floor(Math.random()*100);
				document.getElementById(json.id).id += seed;
				json.id += seed;

				var URL = BBComWidget.base64.decode(json.request),
				callingURL = BBComWidget.base64.encode(encodeURIComponent($WINDOW.location)),
				jsonParameters = '',
				contentURL = '';

				for ( property in json ) {

					jsonParameters += '/' + property + '/' + json[property];

				}

				jsonParameters += '/callingurl/' + callingURL;

				contentURL = URL + jsonParameters;
				BBComWidget.include(contentURL);
			},

			serverResponse: function ( responceJSON ) {


				if ( !responceJSON ) {

					BBComWidget.error();
					return false;

				}

				var div = document.getElementById(responceJSON.id), containerDiv;


				for ( var i = 0, len = responceJSON.styleSheets.length; i < len; i += 1 ) {
					BBComWidget.requestStyleSheet(responceJSON.styleSheets[i]);
				}
	            responceJSON.width = '348';
				containerDiv = '<div class="BBComWidget_wrapper"><div';
				containerDiv += ( typeof responceJSON.width !== 'undefined' ? ' style="width:' + responceJSON.width + 'px">' + responceJSON.content + '</div>' : '>' + responceJSON.content + '</div>');
				if( responceJSON.size == 'small' ) {
					div.className = div.className+' small';
				}
				div.innerHTML = containerDiv + '</div>';
                BBComWidget.include('http://assets.bodybuilding.com/videos/javascript/min/external-video-embed.js');
			}

		};

	})(document, window);