Hi Guys, I've checked that issue and compare navigation bars of many website with ExactFactor websites comparison SEO tool and I pretty sure that webmasters should place the navigational links (and JavaScript) at the right or at the top. When Google reads the website, it reads from the top left. Google emphasizes the first 100 words or text on the site. You don't want these words to be insignificant navigational links. The best thing is to have your heading links with your keywords in the beginning of your page. Let me know what do you think.
Well, wikipedia seem to do OK with navigation on the left. Perhaps best to use CSS to put your menu low in the code, but then position it wherever you want.