"Email Now" subscription widget

Hi!
My non-profit uses wordpress as a CMS for our site: https://www.ya-nc.org

We subscribe to Email Now for email marketing. We currently have an IFrame widget in our sidebar that allows people to sign up for our newsletter. BUT, as you can see, it is really awkward looking because it is too big. Changing the dimensions in the widget pull-down menu only changes the size of the window, not the size of the object, and results in scroll bars.

Emial Now has code for a javascript object that they consider good for sidebars. The code follows:

<link href="https://app.e2ma.net/css/signup.sml.css" rel="stylesheet" type="text/css"><script type="text/javascript" src="https://app.e2ma.net/app/view:SignupForm/signupId:1420181/key:d825a83e9cb055be3a5d0bf5c9ef4ef8/acctId:1409128"></script><div id="load_check" class="signup_form_message" >This form needs Javascript to display, which your browser doesn't support. <a href="https://app.e2ma.net/app/view:Join/signupId:1420181/acctId:1409128"> Sign up here</a> instead </div><script type="text/javascript">signupFormObj.drawForm();</script>

[Please post code snippets between backticks or use the code button.]

How would I implement this object in the sidebar of our wordpress site?

Thanks for the help!
Emily