/*	SWFObject v2.2 <http://code.google.com/p/swfobject/> 
	is released under the MIT License <http://www.opensource.org/licenses/mit-license.php> 
*/
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 * json.js:
 * This file defines functions JSON.parse() and JSON.serialize()
 * for decoding and encoding JavaScript objects and arrays from and to
 * application/json format.
 * 
 * The JSON.parse() function is a safe parser: it uses eval() for
 * efficiency but first ensures that its argument contains only legal
 * JSON literals rather than unrestricted JavaScript code.
 *
 * This code is derived from the code at http://www.json.org/json.js
 * which was written and placed in the public domain by Douglas Crockford.
 **/
// This object holds our parse and serialize functions
var JSON = {}; 

// The parse function is short but the validation code is complex.
// See http://www.ietf.org/rfc/rfc4627.txt
JSON.parse = function(s) {
    try {
        return !(/[^,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]/.test(
                                   s.replace(/"(\\.|[^"\\])*"/g, ''))) &&
            eval('(' + s + ')');
    }
    catch (e) {
        return false;
    }
};

// Our JSON.serialize() function requires a number of helper functions.
// They are all defined within this anonymous function so that they remain
// private and do not pollute the global namespace.
(function () {
    var m = {  // A character conversion map
            '\b': '\\b', '\t': '\\t',  '\n': '\\n', '\f': '\\f',
            '\r': '\\r', '"' : '\\"',  '\\': '\\\\'
        },
        s = { // Map type names to functions for serializing those types
            'boolean': function (x) { return String(x); },
            'null': function (x) { return "null"; },
            number: function (x) { return isFinite(x) ? String(x) : 'null'; },
            string: function (x) {
                if (/["\\\x00-\x1f]/.test(x)) {
                    x = x.replace(/([\x00-\x1f\\"])/g, function(a, b) {
                        var c = m[b];
                        if (c) {
                            return c;
                        }
                        c = b.charCodeAt();
                        return '\\u00' +
                            Math.floor(c / 16).toString(16) +
                            (c % 16).toString(16);
                    });
                }
                return '"' + x + '"';
            },
            array: function (x) {
                var a = ['['], b, f, i, l = x.length, v;
                for (i = 0; i < l; i += 1) {
                    v = x[i];
                    f = s[typeof v];
                    if (f) {
                        v = f(v);
                        if (typeof v == 'string') {
                            if (b) {
                                a[a.length] = ',';
                            }
                            a[a.length] = v;
                            b = true;
                        }
                    }
                }
                a[a.length] = ']';
                return a.join('');
            },
            object: function (x) {
                if (x) {
                    if (x instanceof Array) {
                        return s.array(x);
                    }
                    var a = ['{'], b, f, i, v;
                    for (i in x) {
                        v = x[i];
                        f = s[typeof v];
                        if (f) {
                            v = f(v);
                            if (typeof v == 'string') {
                                if (b) {
                                    a[a.length] = ',';
                                }
                                a.push(s.string(i), ':', v);
                                b = true;
                            }
                        }
                    }
                    a[a.length] = '}';
                    return a.join('');
                }
                return 'null';
            }
        };

    // Export our serialize function outside of this anonymous function
    JSON.serialize = function(o) { return s.object(o); };
})();//
// Vms Client Configuration
//

var taVmsClientConfig = {
	domain: 'http://www.ifwecanyoucan.tv/'
};


//
// Vms Client
//

function taVmsClient( params ){
	
	
	//
	// Init params
	//
	this.params = params == undefined ? {} : params; // Params must always be a JSON object
	
	
	
	//
	// Initialise a callback receiver
	//
	
	this.initCB = function(){
		
		// Check that the current vmsClient is NOT a receiver
		if (this.params.isCallback != true) {
			
			// Create a vmsClientReceiver for callbacks when the vmsClient is first created
			taVmsClientReceiver = new taVmsClient({
				'isCallback': true
			});
		}
		
		// Init variable prefixed onto JSONp calls
		this.cbClient = 'taVmsClientReceiver';
	}
	
	
	
	//
	// Core call function - all JSONp calls will go through this function
	//
	
	this.call = function( requestParams ){
			
		// Function to be called after a successful response - prefixes receiver client
		requestParams.callback = this.cbClient + '.' + requestParams.callback;

		// Get timestamp for each call
		var now = new Date();
		var callId = "call_" + now.getTime();
		
		// Setup core request params - every JSONp call requires this
		var coreParams = {
			'requestParams' : requestParams,
			'callback' : this.cbClient + '.receive',
			'onload' : this.cbClient + ".removeElementById('" + callId + "')",
			'error' : ''
		};
		
		/*
		coreParams.requestParams = requestParams;
		coreParams.callback = this.cbClient + '.receive';
		coreParams.onload = this.cbClient + ".removeElementById('" + callId + "')";
		*/
		
		// Create script tag
		var script = document.createElement('script');
		script.id = callId;
		script.type = 'text/javascript';
		script.src = taVmsClientConfig.domain + "embed?params=" + JSON.serialize(coreParams);
		
		// Write script tag into head of document
		var headElem = document.getElementsByTagName("head")[0];
		headElem.appendChild(script);
	}
	
	
	
	//
	// Core receive function - All JSONp responses will be passed through this function
	//
	
	this.receive = function( params ){
		
		if( params.error != '' )
		{
			this.displayError(params);
			return false;
		}
		
		// Run cleanup functions
		if( params.onload != '' )
			eval(params.onload);
		
		// Call specific callback function
		eval( params.requestParams.callback + '(' + JSON.serialize(params.requestParams) + ')' );
		
	}
	
	
	//
	// Display error
	//
	this.displayError = function( params ){
		document.getElementById(params.requestParams.container).innerHTML = params.error;
	}
	
	//
	// Embed Video - generates a video embed request - to look up video URL
	//
	
	this.embedVideo = function( vid, width, height, container ){
	
		// Create request parameters for video retrieval
		var videoParams = { 
			'callback' : 'embedVideoCb',
			'vid' : vid,
			'width' : width,
			'height' : height,
			'container' : container
		};
		
		/*
		videoParams.callback = 'embedVideoCb';
		videoParams.vid = vid;
		videoParams.width = width;
		videoParams.height = height;
		videoParams.container = container;
		*/
		
		// JSONp call
		this.call(videoParams);
		
	}
	
	
	
	//
	// Callback for embed Video - writes .flv player into HTML
	//
	
	this.embedVideoCb = function( videoParams ){
		
		// Check that a video container is available
		var videoElem = document.getElementById(videoParams.container);
		
		if( videoElem == null )
			throw 'You must create an element with id "' + videoParams.container + '"';
			
		// Force dimensions of video player
		videoElem.style.width = videoParams.width + 'px';
		videoElem.style.height = videoParams.height + 'px';
	
		var fpvars = {
			"key": "#@2295877c57affe909ec",
			"clip": videoParams.video_url
		};
		
		// Change double quotes to single (fix IE problems)
		var flashvars = { 
			config : JSON.serialize(fpvars).replace(/"/g,'\'')
		};
		
		swfobject.embedSWF(taVmsClientConfig.domain + "assets/player/flowplayer.commercial-3.1.0.swf", videoParams.container, videoParams.width, videoParams.height, "9.0.0", taVmsClientConfig.domain + "assets/scripts/playerProductInstall.swf", flashvars);
	}
	
	
	
	//
	// Load in required scripts for any external plugins used
	//
	
	this.loadScripts = function(){
		// Flowplayer JS
		// this.loadScript(taVmsClientConfig.domain + '/custom/plugins/VmsPlayer/assets/player/js/flowplayer-3.1.4.js');		
	}
	
	this.loadScript = function(script_url){
		
		// Write a script tag into the head of the document
		var headElem = document.getElementsByTagName("head")[0];
		var script = document.createElement('script');
		script.type = 'text/javascript';
		script.src = script_url ;
		
		headElem.appendChild(script);
	}
	
	
	
	//
	// Remove DOM element function - used to clean-up expired JSONp script tags
	//
	this.removeElementById = function(id){
		var e = document.getElementById(id);
		e.parentNode.removeChild(e);
		return false;
	}
	
	
	
	//
	// Call init Functions
	//
	this.loadScripts();
	this.initCB();

};
