code: function (autoRender, config) {
              if (!tip) {
                  if (!Ext.isReady) {
                      Ext.onReady(function(){
                          Ext.tip.QuickTipManager.init(autoRender, config);
                      });
                      return;
                  }
  
                  var tipConfig = Ext.apply({ disabled: disabled, id: 'ext-quicktips-tip' }, config),
                      className = tipConfig.className,
                      xtype = tipConfig.xtype;
  
                  if (className) {
                      delete tipConfig.className;
                  } else if (xtype) {
                      className = 'widget.' + xtype;
                      delete tipConfig.xtype;
                  }
  
                  if (autoRender !== false) {
                      tipConfig.renderTo = document.body;
  
                      //<debug>
                      if (tipConfig.renderTo.tagName.toUpperCase() != 'BODY') { // e.g., == 'FRAMESET'
                          Ext.Error.raise({
                              sourceClass: 'Ext.tip.QuickTipManager',
                              sourceMethod: 'init',
                              msg: 'Cannot init QuickTipManager: no document body'
                          });
                      }
                      //</debug>
                  }
  
                  tip = Ext.create(className || 'Ext.tip.QuickTip', tipConfig);
  
                  // private.
                  // Need a globally accessble way of testing whether QuickTipsManager is both loaded AND initialized.
                  Ext.quickTipsActive = true;
              }
          }
docs: Initializes the global QuickTips instance and prepare any quick tips.
  @param {Boolean} [autoRender=true] True to render the QuickTips container
  immediately to preload images.
  @param {Object} [config] config object for the created QuickTip. By
  default, the {@link Ext.tip.QuickTip QuickTip} class is instantiated, but this can
  be changed by supplying an xtype property or a className property in this object.
  All other properties on this object are configuration for the created component.