public/javascripts/yui/container/container.js
function (type, args, obj) {

            var bIFrame = args[0];

            function createIFrame() {

                var oIFrame = this.iframe,
                    oElement = this.element,
                    oParent;

                if (!oIFrame) {
                    if (!m_oIFrameTemplate) {
                        m_oIFrameTemplate = document.createElement("iframe");

                        if (this.isSecure) {
                            m_oIFrameTemplate.src = Overlay.IFRAME_SRC;
                        }

                        /*
                            Set the opacity of the <iframe> to 0 so that it 
                            doesn't modify the opacity of any transparent 
                            elements that may be on top of it (like a shadow).
                        */
                        if (UA.ie) {
                            m_oIFrameTemplate.style.filter = "alpha(opacity=0)";
                            /*
                                 Need to set the "frameBorder" property to 0 
                                 supress the default <iframe> border in IE.  
                                 Setting the CSS "border" property alone 
                                 doesn't supress it.
                            */
                            m_oIFrameTemplate.frameBorder = 0;
                        }
                        else {
                            m_oIFrameTemplate.style.opacity = "0";
                        }

                        m_oIFrameTemplate.style.position = "absolute";
                        m_oIFrameTemplate.style.border = "none";
                        m_oIFrameTemplate.style.margin = "0";
                        m_oIFrameTemplate.style.padding = "0";
                        m_oIFrameTemplate.style.display = "none";
                        m_oIFrameTemplate.tabIndex = -1;
                        m_oIFrameTemplate.className = Overlay.CSS_IFRAME;
                    }

                    oIFrame = m_oIFrameTemplate.cloneNode(false);
                    oIFrame.id = this.id + "_f";
                    oParent = oElement.parentNode;

                    var parentNode = oParent || document.body;

                    this._addToParent(parentNode, oIFrame);
                    this.iframe = oIFrame;
                }

                /*
                     Show the <iframe> before positioning it since the "setXY" 
                     method of DOM requires the element be in the document 
                     and visible.
                */
                this.showIframe();

                /*
                     Syncronize the size and position of the <iframe> to that 
                     of the Overlay.
                */
                this.syncIframe();
                this.stackIframe();

                // Add event listeners to update the <iframe> when necessary
                if (!this._hasIframeEventListeners) {
                    this.showEvent.subscribe(this.showIframe);
                    this.hideEvent.subscribe(this.hideIframe);
                    this.changeContentEvent.subscribe(this.syncIframe);

                    this._hasIframeEventListeners = true;
                }
            }

            function onBeforeShow() {
                createIFrame.call(this);
                this.beforeShowEvent.unsubscribe(onBeforeShow);
                this._iframeDeferred = false;
            }

            if (bIFrame) { // <iframe> shim is enabled

                if (this.cfg.getProperty("visible")) {
                    createIFrame.call(this);
                } else {
                    if (!this._iframeDeferred) {
                        this.beforeShowEvent.subscribe(onBeforeShow);
                        this._iframeDeferred = true;
                    }
                }

            } else {    // <iframe> shim is disabled
                this.hideIframe();

                if (this._hasIframeEventListeners) {
                    this.showEvent.unsubscribe(this.showIframe);
                    this.hideEvent.unsubscribe(this.hideIframe);
                    this.changeContentEvent.unsubscribe(this.syncIframe);

                    this._hasIframeEventListeners = false;
                }
            }
        }
function (type, args, obj) {

            var bIFrame = args[0];

            function createIFrame() {

                var oIFrame = this.iframe,
                    oElement = this.element,
                    oParent;

                if (!oIFrame) {
                    if (!m_oIFrameTemplate) {
                        m_oIFrameTemplate = document.createElement("iframe");

                        if (this.isSecure) {
                            m_oIFrameTemplate.src = Overlay.IFRAME_SRC;
                        }

                        /*
                            Set the opacity of the <iframe> to 0 so that it 
                            doesn't modify the opacity of any transparent 
                            elements that may be on top of it (like a shadow).
                        */
                        if (UA.ie) {
                            m_oIFrameTemplate.style.filter = "alpha(opacity=0)";
                            /*
                                 Need to set the "frameBorder" property to 0 
                                 supress the default <iframe> border in IE.  
                                 Setting the CSS "border" property alone 
                                 doesn't supress it.
                            */
                            m_oIFrameTemplate.frameBorder = 0;
                        }
                        else {
                            m_oIFrameTemplate.style.opacity = "0";
                        }

                        m_oIFrameTemplate.style.position = "absolute";
                        m_oIFrameTemplate.style.border = "none";
                        m_oIFrameTemplate.style.margin = "0";
                        m_oIFrameTemplate.style.padding = "0";
                        m_oIFrameTemplate.style.display = "none";
                        m_oIFrameTemplate.tabIndex = -1;
                        m_oIFrameTemplate.className = Overlay.CSS_IFRAME;
                    }

                    oIFrame = m_oIFrameTemplate.cloneNode(false);
                    oIFrame.id = this.id + "_f";
                    oParent = oElement.parentNode;

                    var parentNode = oParent || document.body;

                    this._addToParent(parentNode, oIFrame);
                    this.iframe = oIFrame;
                }

                /*
                     Show the <iframe> before positioning it since the "setXY" 
                     method of DOM requires the element be in the document 
                     and visible.
                */
                this.showIframe();

                /*
                     Syncronize the size and position of the <iframe> to that 
                     of the Overlay.
                */
                this.syncIframe();
                this.stackIframe();

                // Add event listeners to update the <iframe> when necessary
                if (!this._hasIframeEventListeners) {
                    this.showEvent.subscribe(this.showIframe);
                    this.hideEvent.subscribe(this.hideIframe);
                    this.changeContentEvent.subscribe(this.syncIframe);

                    this._hasIframeEventListeners = true;
                }
            }

            function onBeforeShow() {
                createIFrame.call(this);
                this.beforeShowEvent.unsubscribe(onBeforeShow);
                this._iframeDeferred = false;
            }

            if (bIFrame) { // <iframe> shim is enabled

                if (this.cfg.getProperty("visible")) {
                    createIFrame.call(this);
                } else {
                    if (!this._iframeDeferred) {
                        this.beforeShowEvent.subscribe(onBeforeShow);
                        this._iframeDeferred = true;
                    }
                }

            } else {    // <iframe> shim is disabled
                this.hideIframe();

                if (this._hasIframeEventListeners) {
                    this.showEvent.unsubscribe(this.showIframe);
                    this.hideEvent.unsubscribe(this.hideIframe);
                    this.changeContentEvent.unsubscribe(this.syncIframe);

                    this._hasIframeEventListeners = false;
                }
            }
        }
function ( type , args , obj ) { var bIFrame = args [ 0 ] ; function createIFrame ( ) { var oIFrame = this . iframe , oElement = this . element , oParent ; if ( ! oIFrame ) { if ( ! m_oIFrameTemplate ) { m_oIFrameTemplate = document . createElement ( "iframe" ) ; if ( this . isSecure ) { m_oIFrameTemplate . src = Overlay . IFRAME_SRC ; } /*
                            Set the opacity of the <iframe> to 0 so that it 
                            doesn't modify the opacity of any transparent 
                            elements that may be on top of it (like a shadow).
                        */ if ( UA . ie ) { m_oIFrameTemplate . style . filter = "alpha(opacity=0)" ; /*
                                 Need to set the "frameBorder" property to 0 
                                 supress the default <iframe> border in IE.  
                                 Setting the CSS "border" property alone 
                                 doesn't supress it.
                            */ m_oIFrameTemplate . frameBorder = 0 ; } else { m_oIFrameTemplate . style . opacity = "0" ; } m_oIFrameTemplate . style . position = "absolute" ; m_oIFrameTemplate . style . border = "none" ; m_oIFrameTemplate . style . margin = "0" ; m_oIFrameTemplate . style . padding = "0" ; m_oIFrameTemplate . style . display = "none" ; m_oIFrameTemplate . tabIndex = - 1 ; m_oIFrameTemplate . className = Overlay . CSS_IFRAME ; } oIFrame = m_oIFrameTemplate . cloneNode ( false ) ; oIFrame . id = this . id + "_f" ; oParent = oElement . parentNode ; var parentNode = oParent || document . body ; this . _addToParent ( parentNode , oIFrame ) ; this . iframe = oIFrame ; } /*
                     Show the <iframe> before positioning it since the "setXY" 
                     method of DOM requires the element be in the document 
                     and visible.
                */ this . showIframe ( ) ; /*
                     Syncronize the size and position of the <iframe> to that 
                     of the Overlay.
                */ this . syncIframe ( ) ; this . stackIframe ( ) ; // Add event listeners to update the <iframe> when necessary if ( ! this . _hasIframeEventListeners ) { this . showEvent . subscribe ( this . showIframe ) ; this . hideEvent . subscribe ( this . hideIframe ) ; this . changeContentEvent . subscribe ( this . syncIframe ) ; this . _hasIframeEventListeners = true ; } } function onBeforeShow ( ) { createIFrame . call ( this ) ; this . beforeShowEvent . unsubscribe ( onBeforeShow ) ; this . _iframeDeferred = false ; } if ( bIFrame ) { // <iframe> shim is enabled if ( this . cfg . getProperty ( "visible" ) ) { createIFrame . call ( this ) ; } else { if ( ! this . _iframeDeferred ) { this . beforeShowEvent . subscribe ( onBeforeShow ) ; this . _iframeDeferred = true ; } } } else { // <iframe> shim is disabled this . hideIframe ( ) ; if ( this . _hasIframeEventListeners ) { this . showEvent . unsubscribe ( this . showIframe ) ; this . hideEvent . unsubscribe ( this . hideIframe ) ; this . changeContentEvent . unsubscribe ( this . syncIframe ) ; this . _hasIframeEventListeners = false ; } } }
The default event handler fired when the "iframe" property is changed.
@method configIframe
@param {String} type The CustomEvent type (usually the property name)
@param {Object[]} args The CustomEvent arguments. For configuration
handlers, args[0] will equal the newly applied value for the property.
@param {Object} obj The scope object. For configuration handlers,
this will usually equal the owner.
The default event handler fired when the iframe property is changed .