Solve the ExtJS in Firefox closed windows and then open the IFRAME JS function can not access the problem _yui. Ext Related

In IE and Google Chrome is all normal, is very depressed, and found many kinds of calls in the IFrame function method, the problem has not been resolved. Today on Google search again, patiently browsing the search results, and finally found someone wrote that can be used

document.getElementById (' Iframeid '). Contentwindow.myfunc ();

Such a way, has not seen this writing before, holding a dead horse when the mentality of the horse medicine, try this code. Miracles have happened, charm. Now this method works well in the three browsers mentioned above and takes notes here for later use.