/*	CondeNet: AdLoader v.1.5 (2/2009)
By: esmiling@condenet.com
Documentation: http://wiki.conde-dev.com:8081/display/prod/DOM+Based+Advertisement+Loading+Technique
*/

/* NAMESPACES USED */
cnp = window.cnp || {};
cnp.ad = {};
cnp.util = {};

/* CONSTANTS */
cnp.ad.refreshable = 1;
cnp.ad.standard = 2;
cnp.ad.maxResizeAttempts = 10;
cnp.ad.containerClassName = "adFrameContainer";
cnp.ad.resizeErrorMargin = 29; //strip is 30px high and becomes 1px when the image is missing - bnkr 
cnp.ad.tilingDelay = 150;

/*	UTILITY FUNCTIONS */
cnp.util.randomNumber = function(min, max) {
    return Math.floor(Math.random() * (max - min)) + min;
};
cnp.util.buildURL = function(args) {
    var uri = args.uri;
    var parameters = args.parameters;
    var seperator = args.seperator || '&';
    var joiner = args.joiner || '?';
    var retString = uri + (uri.indexOf(joiner) == -1 ? joiner : seperator);
    for (var i = 0; i < parameters.length; i++) {
        for (var param in parameters[i]) {
            if (parameters[i].hasOwnProperty(param)) {
                retString += param + '=' + parameters[i][param] + seperator;
            }
        }
    }
    if (retString.lastIndexOf(seperator) == retString.length - 1) {
        retString = retString.slice(0, retString.length - 1);
    }
    return retString;
};
cnp.util.parseParams = function(str, sep) {
    var parameters = [], paramPairs = [];
    var separator = sep || '&';
    paramPairs = str.split(sep);
    for (var i = 0; i < paramPairs.length; i++) {
        if (paramPairs[i].indexOf('=') != -1) {
            var pair = paramPairs[i].split('=');
            var param = {};
            param[pair[0]] = pair[1];
            parameters.push(param);
        }
    }
    return parameters;
};
/* begin node cleanup functions */
cnp.util.CleanerNode = function(element, eFirstChild, eLastChild) {
    this.element = element;
    this.eFirstChild = eFirstChild;
    this.eLastChild = eLastChild;
};
cnp.util.CleanerNode.prototype.validate = function() {
    if (this.getChild('firstChild') != this.eFirstChild) {
        this.sanitize('firstChild');
    }
    if (this.getChild('lastChild') != this.eLastChild) {
        this.sanitize('lastChild');
    }
};
cnp.util.CleanerNode.prototype.sanitize = function(position) {
    var element = this.element[position];
    var expectedNode = (position == 'lastChild' ? this.eLastChild : this.eFirstChild);
    while (element != expectedNode) {
        this.element.removeChild(element);
        delete element;
        element = this.element[position]
    }
};
cnp.util.CleanerNode.prototype.getChild = function(position) {
    return cnp.util.getChild(this.element, position);
};
cnp.util.getChild = function(parent, position) {
    //this function gets the first/last child of a node excluding non-element nodes
    var element = parent[position];
    var sibling = (position == 'lastChild' ? 'previousSibling' : 'nextSibling');
    while (element.nodeType != 1) {
        element = element[sibling];
    }
    return element;
};
/*end node cleanup functions*/


/*	AD MANAGER 
Manages ord, tilecount and sequential refreshes
*/
cnp.ad.manager = new function() {
    this.bodyCleanerNode = {};
    this.headCleanerNode = {};
    this.isInit = false;
    var refreshableAds = [], _ord, _tileCount = 0;
    function randomizeOrd() {
        _ord = cnp.util.randomNumber(10000000000000000, 99999999999999999);
    }
    randomizeOrd();
    this.addRefreshableAd = function(adUnit) {
        refreshableAds.push(adUnit);
    };
    this.reloadAds = function() {
        this.sanitizeDocument();
        randomizeOrd();
        var i = -1, clearer;
        clearer = setInterval(
			function() {
			    if ((i + 1) < _tileCount) {
			        i++;
			        //avoid call to an undefined element (_tileCount increase with standard elements too)
			        if (refreshableAds[i] != undefined)
			            refreshableAds[i].load();
			    } else {
			        clearInterval(clearer);
			    }
			}, cnp.ad.tilingDelay);
    };
    this.sanitizeDocument = function() { //clean up after previously loaded ads
        //this.headCleanerNode.validate();
        //this.bodyCleanerNode.validate();
        for (var i = 0; i < refreshableAds.length; i++) {
            refreshableAds[i].CleanerNode.validate();
        }
    };
    this.getTileCounter = function() {
        return ++_tileCount;
    };
    this.getOrd = function() {
        return _ord;
    };
    this.init = function() {
        this.isInit = true;
        var bodyNode = document.body || document.documentElement; //parent
        var headNode = document.getElementsByTagName('HEAD')[0];
        this.headCleanerNode = new cnp.util.CleanerNode(headNode, cnp.util.getChild(headNode, 'firstChild'), cnp.util.getChild(headNode, 'lastChild'));
        this.bodyCleanerNode = new cnp.util.CleanerNode(bodyNode, cnp.util.getChild(bodyNode, 'firstChild'), cnp.util.getChild(bodyNode, 'lastChild'));
        this.reloadAds();
    };
} ();

if (document.addEventListener) {
    document.addEventListener("DOMContentLoaded", function() { cnp.ad.manager.init(); }, false);
}
else if (window.attachEvent) {
    window.attachEvent('onload', function() { cnp.ad.manager.init(); });
}

/*	DART PROPERTIES 
Stores global dart information/parameters applied to all placements
*/
cnp.ad.dart = new function() {
    var _site, _zone, _url, _parameters, _onLoad;
    _url = "http://ad.it.doubleclick.net/adj";
    _parameters = [];
    this.getParameters = function() {
        return _parameters;
    };
    this.getUrl = function() {
        return _url;
    };
    this.getSite = function() {
        return _site;
    };
    this.getZone = function() {
        return _zone;
    };
    this.getRequestURI = function() {
        return this.getUrl() + '/' + this.getSite() + '/' + this.getZone();
    };
    this.setSite = function(site) {
        _site = site;
    };
    this.setZone = function(zone) {
        _zone = zone;
    };
    this.addParameter = function(obj) {
        _parameters.push(obj);
    };
    this.addParameterString = function(str) {
        var params = cnp.util.parseParams(str, ';');
        _parameters = _parameters.concat(params);
    };
} ();

/*	dartAdUnit simple factory */
cnp.ad.create = function(type, useTarget) {
    var dartAdUnit;
    if (type == cnp.ad.refreshable) {
        dartAdUnit = new cnp.ad.RefreshableDartAdUnit(useTarget);
    } else {
        dartAdUnit = new cnp.ad.DartAdUnit();
    }
    //dartAdUnit.addParameter({"abr": "!webtv"});
    dartAdUnit.addParameters(cnp.ad.dart.getParameters());
    dartAdUnit.addParameter({ "tile": cnp.ad.manager.getTileCounter() });
    return dartAdUnit;
};

/*	STANDARD DART AD UNIT (cnp.ad.standard)
Provides Dart URL construction methods, and standard/legacy loading technique (document.write)
*/
cnp.ad.DartAdUnit = function() {
    this.parameters = [];
};
cnp.ad.DartAdUnit.prototype.addParameter = function(obj) {
    this.parameters.push(obj);
};
cnp.ad.DartAdUnit.prototype.addParameters = function(parameters) {
    this.parameters = this.parameters.concat(parameters);
};
cnp.ad.DartAdUnit.prototype.addParameterString = function(str) {
    var params = cnp.util.parseParams(str, ';');
    this.addParameters(params);
};
cnp.ad.DartAdUnit.prototype.getParameter = function(name) {
    for (var i = 0; i < this.parameters.length; i++) {
        if (name in this.parameters[i]) {
            return this.parameters[i][name];
        }
    }
};
cnp.ad.DartAdUnit.prototype.setParameter = function(name, value) {
    var param = {};
    param[name] = value;
    this.removeParameter(name);
    this.addParameter(param);
};
cnp.ad.DartAdUnit.prototype.removeParameter = function(name) {
    for (var i = 0; i < this.parameters.length; i++) {
        if (this.parameters[i][name]) {
            this.parameters.splice(i, 1);
        }
    }
};
cnp.ad.DartAdUnit.prototype.load = function() {
    document.write('<scr' + 'ipt language="JavaScript 1.5" type="text/javascript" src="' + this.getDartURL() + '"></scr' + 'ipt>');
};
cnp.ad.DartAdUnit.prototype.getDartURL = function() {
    this.setParameter('ord', cnp.ad.manager.getOrd());
    var requestURI = cnp.ad.dart.getRequestURI();
    var dartURL = cnp.util.buildURL({
        uri: requestURI,
        parameters: this.parameters,
        seperator: ';',
        joiner: ';'
    });
    return dartURL;
};

/*	REFRESHABLE DART AD UNIT (cnp.ad.refreshable): extends cnp.ad.standard  
Extends standard DartAdUnit, overrides load method (required for refresh behavior) 
*/
cnp.ad.RefreshableDartAdUnit = function(useTarget) {
    this.base = cnp.ad.DartAdUnit;
    this.base();
    this.useTarget = useTarget;
    this.CleanerNode = {};
    this.target = this.makeTarget();
    this.iFrame = this.makeIframe();
    cnp.ad.manager.addRefreshableAd(this);
};
cnp.ad.RefreshableDartAdUnit.prototype = new cnp.ad.DartAdUnit();
cnp.ad.RefreshableDartAdUnit.prototype.constructor = cnp.ad.RefreshableDartAdUnit;
cnp.ad.RefreshableDartAdUnit.prototype.load = function() {
    var iFrameURL = cnp.util.buildURL({
        uri: cnp.ad.loaderFrameSrc,
        parameters: [{ "req": this.getDartURL()}]
    });
    try {
        this.getIframeDocument().location.replace(iFrameURL);
    }
    catch (err) {
    }

    /* bnkr */
    var currentObject = this;
    if (typeof (currentObject.onRefresh) == 'function') {
        var refreshFunction = currentObject.onRefresh;
        var domTimer = setTimeout(function() {
            refreshFunction();
            clearTimeout(domTimer);
        }, 1400);
    }
    /* bnkr */
};

/* bnkr */
cnp.ad.RefreshableDartAdUnit.prototype.onLoadFunction = function(loadFunction) {
    this.onLoad = loadFunction;
};
cnp.ad.RefreshableDartAdUnit.prototype.onRefreshFunction = function(refreshFunction) {
    this.onRefresh = refreshFunction;
};
/* bnkr */

cnp.ad.RefreshableDartAdUnit.prototype.makeTarget = function() {
    var target, targetId;
    targetId = 'dartTarget_' + cnp.util.randomNumber(1000, 9999);
    document.write('<div id="' + targetId + '"></div>');
    target = document.getElementById(targetId);
    return target;
};
cnp.ad.RefreshableDartAdUnit.prototype.makeIframe = function(frameId) {
    var currentObject = this;
    var iFrameContainer = document.createElement('DIV');
    var iFrame = document.createElement('IFRAME');
    iFrameContainer.className = cnp.ad.containerClassName;
    iFrame.src = cnp.ad.emptyFrameSrc + '?cb=' + Math.floor(Math.random() * 100000);
    iFrame.width = iFrame.height = 1;
    iFrame.frameBorder = iFrame.border = 0;
    iFrame.scrolling = 'no';
    iFrameContainer.appendChild(iFrame);
    this.target.parentNode.insertBefore(iFrameContainer, this.target);
    this.CleanerNode = new cnp.util.CleanerNode(iFrameContainer, iFrame, iFrame);
    if (iFrame.readyState) { //ie
        iFrame.onreadystatechange = function() {
            if (iFrame.readyState == 'complete') {
                currentObject.loadHandler();
            }
        };
    } else {
        iFrame.onload = function() {
            currentObject.loadHandler();
        };
    }
    return iFrame;
};
cnp.ad.DartAdUnit.prototype.loadHandler = function() {
    try {
        if (this.getIframeDocument().location.href.indexOf(cnp.ad.emptyFrameSrc) != -1) {
            return;
        }
    } catch (err) {
        return;
    }
    if (this.useTarget) {
        this.refreshTarget();
    } else {
        var count = 0, dartAdUnit = this;
        var outputSize = dartAdUnit.resizeFrame();
        if (!outputSize) {
            var resizeTimer = setInterval(
				function() {
				    if (count < cnp.ad.maxResizeAttempts) {
				        outputSize = dartAdUnit.resizeFrame();
				        count++;
				        if (outputSize > 1) {
				            clearInterval(resizeTimer);
				        }
				    } else {
				        clearInterval(resizeTimer);
				    }
				}, 500);
        }
    }


};
cnp.ad.DartAdUnit.prototype.refreshTarget = function() {
    var iFrameDoc = this.getIframeDocument();
    var iFrameBody = iFrameDoc.body || iFrameDoc.documentElement;
    this.target.innerHTML = iFrameBody.innerHTML;
};
cnp.ad.DartAdUnit.prototype.getIframeDocument = function() {
    var doc = (this.iFrame.contentDocument || this.iFrame.contentWindow.document || this.iFrame.document);
    return doc;
};
cnp.ad.RefreshableDartAdUnit.prototype.resizeFrame = function() {
    var szParam, expectedWidth, expectedHeight, iframeDocument, frameWidth, frameHeight, iframeParentDIV;
    function getFrameHeight() {
        var newHeight, measuredHeight;
        var bottomDiv = iframeDocument.getElementById('bottom_div');
        measuredHeight = (bottomDiv ? measuredHeight = bottomDiv.offsetTop : iframeDocument.body.scrollHeight);
        if (expectedHeight && measuredHeight != expectedHeight) {
            newHeight = (Math.abs(measuredHeight - expectedHeight) < cnp.ad.resizeErrorMargin ? expectedHeight : measuredHeight);
        } else {
            newHeight = measuredHeight;
        }

        if (iframeDocument.body.innerHTML.toUpperCase().indexOf('<OBJECT') == -1 && iframeDocument.body.innerHTML.toUpperCase().indexOf('<IMG') == -1) {
            if (iframeParentDIV.innerHTML.toUpperCase().indexOf('<OBJECT') == -1 && iframeParentDIV.innerHTML.toUpperCase().indexOf('<IMG') == -1) {
                newHeight = 0;
                iframeParentDIV.style.height = "0";
            }
            else {
                //iframeParentDIV.style.height=newHeight+"px";
                newHeight = 0;
                iframeParentDIV.style.height = "100%";
            }
        }
        else {
            //iframeParentDIV.style.height=newHeight+"px";
            iframeParentDIV.style.height = "100%";
        }

        return newHeight;
    }
    function getFrameWidth() {
        return expectedWidth;
    }
    szParam = this.getParameter('sz');
    if (szParam) {
        expectedWidth = szParam.split('x')[0];
        expectedHeight = szParam.split('x')[1];
    }

    iframeDocument = this.getIframeDocument();
    iframeParentDIV = this.iFrame.parentNode;

    if (expectedWidth == "1" && expectedHeight == "1") {
        frameWidth = 1280;
        frameHeight = 1024;
    } else if (expectedWidth == "2" && expectedHeight == "2") {
        frameWidth = 300;
        frameHeight = getFrameHeight();
        if (document.getElementById('advSpalla2') != null && frameHeight > 1) {
            document.getElementById('advSpalla2').setAttribute("class", "boxAdv");
        }

    } else if (expectedWidth == "5" && expectedHeight == "5") {
        frameWidth = 300;
        frameHeight = getFrameHeight();
        if (document.getElementById('advSpalla2') != null && frameHeight > 1) {
            document.getElementById('advSpalla2').setAttribute("class", "boxAdv");
        }
    } else {
        frameWidth = getFrameWidth();
        frameHeight = getFrameHeight();
        if (document.getElementById('advSpalla') != null && frameHeight > 1) {
            document.getElementById('advSpalla').setAttribute("class", "boxAdv");
        }
    }

    if ((szParam == '300x250,300x600') || (szParam == '2x2')) {
        if (frameHeight >= 50) {
            frameHeight += 20;
        }
    }

    this.iFrame.width = this.iFrame.style.width = frameWidth + "px";
    this.iFrame.height = this.iFrame.style.height = frameHeight + "px";


    /* bnkr */
    var currentObject = this;
    if (typeof (currentObject.onLoad) == 'function') {
        var loadedFunction = currentObject.onLoad;
        //console.log('loadedFunction');
        var domTimer = setTimeout(function() {
            var isEmpty = true;
            if (
                ((currentObject.getIframeDocument().body.innerHTML.toLowerCase().match(/(img)/) != null) && (currentObject.getIframeDocument().body.innerHTML.toLowerCase().match(/grey.gif/) == null))
                || (currentObject.getIframeDocument().body.innerHTML.toLowerCase().match(/(object|embed)/) != null)

            ) { isEmpty = false; } else { isEmpty = true; }

            if (frameHeight == 0) { isEmpty = true; }

            loadedFunction(isEmpty);
            clearTimeout(domTimer);
        }, 400);
    }
    /* bnkr */

    return frameHeight;

};