Click button or hide box in iMacros or Greasemonkey - greasemonkey

Question

So I've had an iMacro for about a year now working fine.
The iMacro has the following line in it:
ONDIALOG POS=1 BUTTON=OK CONTENT=
That's because after the tab 2 closes, a dialog popup box appears and the "OK" button needs to be clicked. However, for some reason since a few days now this stopped working. I think the popup box somehow changed.
Here is how the box looks:
I need to be able to click this, because otherwise I can't continue doing what I need to do. I'm thinking if iMacros can do it (I tried recording with different recording modes, and nothing records when I click the OK button). I'm using iMacros for Firefox by the way. Or, maybe to do it somehow with Greasemonkey? Or if anyone has any other idea?
The website I'm trying to create an iMacro for is called Likesasap.com, and I'm trying to make a script for their website hits category.
Here is the script that I have that worked up until a month ago:
SET !ERRORIGNORE YES
SET !TIMEOUT_PAGE 20
SET !VAR1 EVAL("var min = 2; var max = 3; var randomNumber = Math.floor(Math.random() * (max - min + 1)) + min; randomNumber;")
SET !VAR2 EVAL("var min = 4; var max = 5; var randomNumber = Math.floor(Math.random() * (max - min + 1)) + min; randomNumber;")
SET !VAR3 EVAL("var min = 25; var max = 27; var randomNumber = Math.floor(Math.random() * (max - min + 1)) + min; randomNumber;")
TAB T=1
URL GOTO=http://www.likesasap.com/website.php
WAIT SECONDS={{!VAR1}}
TAG POS=1 TYPE=INPUT:BUTTON ATTR=*
TAB T=2
WAIT SECONDS={{!VAR3}}
TAB T=1
ONDIALOG POS=1 BUTTON=OK CONTENT=
WAIT SECONDS={{!VAR2}}
TAG POS=1 TYPE=INPUT:BUTTON ATTR=*
TAB T=2
WAIT SECONDS={{!VAR3}}
TAB T=1
ONDIALOG POS=1 BUTTON=OK CONTENT=
WAIT SECONDS={{!VAR2}}
TAG POS=1 TYPE=INPUT:BUTTON ATTR=*
TAB T=2
WAIT SECONDS={{!VAR3}}
TAB T=1
ONDIALOG POS=1 BUTTON=OK CONTENT=
TAB CLOSEALLOTHERS
WAIT SECONDS={{!VAR2}}
Can anyone help with this?
Thanks