Can't get slider on Home Example 10 to work

Hi there,

I am trying to make the slider work on the Home Example 10 page. Here is the link to it in my website.
http://theletmebefrankguy.com/home-example-10/
I’m referring to the slider that has the phones and the laptop interchangeably.

When I try to duplicate it, my image is WAYYY too big, and since this .png didn’t get uploaded with my highend theme import, I cannot see what size those two image files are … ? x ?
http://hb-themes.com/themes/highend_wp/wp-content/uploads/2014/04/iphones.png
The above link is what shows in my home-example-10 file but that file isn’t in my media library nor do I have access to it on the hb-themes.com website.

Could you tell me what size of graphics I have to put into that slider to make it work?
Here is what my page looks like at the moment.
http://theletmebefrankguy.com/downloads/
As you can see, I obviously have the wrong file size for the phone.
Thanks,
Shawn Dady