I think it is worth pointing out a couple of observations regarding adverts vs websites.
Quite often airline websites state 'minimum' requirements, as do job adverts in the likes of Flight International. What you have to do is research and make the effort to find out if these stated minimums are actually in force.
Two examples spring to mind. Britannia's website lagged notoriously behind their recruiting policy for at least a year (haven't looked recently), but it stated you needed at least a 757/767 type rating with experience on type, when infact they were actively recruiting low houred pilots such as CTC cadets and those with 'lesser' experience such as turbo-prop.
Example two is occuring right now. BMI Regional stated 500hrs in their recent advert, but I personally know of two pilots who have been recruited with 200hrs since then and another with the same who has been told 'oh, don't worry about that, I will make a note on your CV'
So, do your research. If Virgin Atlantic ask for 2500hrs with heavy jet, you should be able to find out easily enough that it actually does mean that, but when certain other airlines make statements of minimum requirements, a bit of research may mean that you will be considered without it. Don't miss an opportunity is the thrust of what I am saying.
Good luck.
PP