[HELP]someone knowledgable in jQuery

[Dr.CustUmz]

so we have a html link

<a href="http://google.com">Google</a>

and we target the google.com part like this

return this.each(function(){
    var link = $(this);
    var url = settings.service
    .replace("__URL__" , link.attr("href"))
    .replace("__DOMAIN__", link.attr("href")
    .replace("http://","").replace("https://", ""));.......more code

and this works, for my normal href's

but i want to target a link like this

<a href="out.php?link=http://google.com">Google</a>

so the end __URL__ is only "google.com"

i have tried many ways, and looking at this code the obvious replace has been done
replace("out.php?link=http://","").replace("out.php?link=https://", "")

im stuck, i set a demo up HERE