Strange Javascript addition in Email address

Question

recently I received an email from someone whose email address contained strange additions.

Instead of Somebody <[e-mail]>, it was Somebody <[e-mail]<javascript:_e(%7B%7D,'cvml','[e-mail]');>

What is the added part's function?

Answer 1

According to a post on Stack Overflow, it seems that it is the Javascript to generate custom font. %7B%7D translates to {} and "cvml returns urn:schemas-microsoft-com:vml which is an XML namespace for Vector Markup Language".