YAHOO.example.fixSideBar = function(){
    var outerContainer = YAHOO.util.Dom.get('doc2') || YAHOO.util.Dom.get('doc');
    if(outerContainer){
        var currentWidth = YAHOO.util.Dom.getViewportWidth();
        outerContainer.id = (currentWidth < 950) ? 'doc' : 'doc2';
    };
    var mainContainer = YAHOO.util.Dom.get('yui-main');
    var sideBar = YAHOO.util.Dom.get('sidebar');
    if(mainContainer && sideBar){
        YAHOO.util.Dom.setStyle(sideBar,'height',mainContainer.offsetHeight + 'px');
    };
}();