[WeirdmanI9]

Use a bridge gif, and then to keep you from falling off the edge when walking acorss you can change all of the side tiles to tiles that block, then change them back to the original tiles when you are done. It's that simple, if you know how to update tiles, but if you don't, here it is

board[x*y]=tilesx*tilesy;
updateboard x,y,updatex,updatey;

Do that for all of the tiles and save the original tiles in a this. string to call them up later on.