a PR is not depended upon just the back links or d content... it depends upon the over wesbite ... it includes the HTML coding, the design, broken links n all ... but yes right now google gives more prefernece to the number og quality links that the wesbites has to its credit... but then this is not necesarry even bcoz there r so many sites to look at who hav got gud PR for their website but do not have any links ... so focus keeps shifting but yes PR doesnt depend upon just one thing as such... it includes the over all website while ranking n rating...
Actually thats wrong. PR is ONLY dependent on the number and PR of the links to your website. Its nothing to do with content or html code.