Hey, Not sure what langauge i need here but im trying to make a 2D birds eye view map of landscape that the user with the up/down/left/right move on a fixed grid on a browser. The things im needing from it block detection where by if some one walks into a tree for example they have to change direction. Able to write to a server in MYSQL for example finding a item so i need to add it to the user table. And other general stuff needed from the database. I can currently do it very cleverly with a table having a background image and the table then has 50by50 rows/columns and the co-ords represent which cell the image is shown (the image showing their avatar). But its not perfect as i get off the screen issues. And this involves constant page reloads. So can any one recommend which langauge is best for the browser for this?

if you are doing browser game, Adobe Flash is certainly not a bad choice.
as for the map navigation, i would say QuadTree and A*. ( Flash uses
Actionscript)

That'd be really simple in Flash. Collision detection is pretty basic, you'll figure it out easy.

Yeah i've been looking for tutorial on it though i keep finding google map type tutorials which is not what i need - bit of a pain !

There is a quad tree tutorial here on game dev:
http://www.gamedev.net/reference/programming/features/quadtrees/