add: if (document.getElementById("displayDeck").selectedPanel == accountCentralBox) ShowingAccountCentral(); else 
context: function ShowAccountCentral(){    document.getElementById("displayDeck").selectedPanel = accountCentralBox;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/f2d04008fa9abbd0270c6d0b99c6bfff36c1990a/mailWindow.js/clean/mail/base/content/mailWindow.js