How to Close Pop Up with a link in Image on Pop Up

Hi There,
I have a pop up installed on the home page of lmts.ca. I have it set to only show once. But the pop up has two options for the person to choose from, either click the image that will take them to another related site or click on the image that will take them to the homepage of lmts.ca. But when they click this option, they will get the pop up again, and again and again, is there a way to make it so when they click this option the pop up doesn't keep showing? Is there a way to make this image just close the pop up instead of leading back to lmts.ca over and over?