Help! Help! Help!

I have a problem writing or reply emails lately. What should I do?
Everytimes when I try to reply or write a email, there are Internet Explorere Script Alerts pop up. 1 is "unable to add event listener for click to undefined", the other is "unable to add listener for keypress to INPUT". Then after I click, they got disappeared, but I am not able to type anything in the body for a email. What I should do about that?