ENTER? YOU DON'T NEED NO ENTER!
I don't know of any other thing an enter button would do except to create a unit card, which is one of the viewing options on the left-hand side.
As for pesgores... I loaded up IE8 and checked it out. Apparently, not only does the armor count utterly fail, but so does the layout (this
is what it should look like). Unfortunately, all I can say is that I'm sorry. This tool has only been proven useful in Firefox. I included the little warning dialog you see every time you load the page because IE doesn't conform to a lot of the web standards that the page depends on; as a result, it appears as a horrible and broken product. There's nothing I can do, because I don't know how to cater to IE's quirks.