public/javascripts/yui/container/container.js
function () {

            var aButtons = this.cfg.getProperty("buttons"),
                oButton,
                oElement;

            if (aButtons && Lang.isArray(aButtons)) {
                oButton = aButtons[0];
                if (oButton) {
                    oElement = this._getButton(oButton.htmlButton);
                    if (oElement) {
                        /*
                            Place the call to the "focus" method inside a 
                            try/catch block to prevent IE from throwing 
                            JavaScript errors if the element is disabled 
                            or hidden.
                        */
                        try {
                            oElement.focus();
                        } catch(oException) {
                            // ignore
                        }
                    }
                }
            }
        }
function () {

            var aButtons = this.cfg.getProperty("buttons"),
                oButton,
                oElement;

            if (aButtons && Lang.isArray(aButtons)) {
                oButton = aButtons[0];
                if (oButton) {
                    oElement = this._getButton(oButton.htmlButton);
                    if (oElement) {
                        /*
                            Place the call to the "focus" method inside a 
                            try/catch block to prevent IE from throwing 
                            JavaScript errors if the element is disabled 
                            or hidden.
                        */
                        try {
                            oElement.focus();
                        } catch(oException) {
                            // ignore
                        }
                    }
                }
            }
        }
function ( ) { var aButtons = this . cfg . getProperty ( "buttons" ) , oButton , oElement ; if ( aButtons && Lang . isArray ( aButtons ) ) { oButton = aButtons [ 0 ] ; if ( oButton ) { oElement = this . _getButton ( oButton . htmlButton ) ; if ( oElement ) { /*
                            Place the call to the "focus" method inside a 
                            try/catch block to prevent IE from throwing 
                            JavaScript errors if the element is disabled 
                            or hidden.
                        */ try { oElement . focus ( ) ; } catch ( oException ) { // ignore } } } } }
Sets the focus to the first button created via the "buttons"
configuration property.
@method focusFirstButton
Sets the focus to the first button created via the buttons configuration property .