In the functin show() there is a statement $(window).bind("resize", function (e) { ... }) to register a resize event handler to the window but no corresponding statement $(window).unbind("resize")  in the function hide(). If we create new msgBox and close it and then repeat this operation for several times the DOM count will increase gradually.

Fixes jquery.msgBox.js

 - add reference to bootstrap
 - remove invalid email address

changed type="radiobutton" to type="radio"

Update jquery.msgBox.js