How to pass a urine test?

I just booked a gig working on a cruise ship and I need to have a drug test done before I go. I started smoking marijuana about 6 months ago, and smoke up to 6 days a week, once a day. I have since stopped(about a week ago) and have my test in a week and a half. I looked up a ton of detox stuff, and purchased something called "Total Stealth" but since then have read negative facts about it. I would ideally like to do a 7 day cleanser(I looked up Nutra cleanse) or something of that nature, but couldn't find one that didn't have negative reviews. I could always use a friends urine, but I take certain prescribed medications that my doctor knows about that would not show up in my urine test if I used someone elses. I exercise daily, drink lots of water and eat healthy. I do not intend to start smoking again after my test, so I want something that will really work and help me cleanse my system of all toxins. Any suggestions?