vertical scrolling

i have a vertical long map , have problems with the scrolling because of my bottom interface
when i go down i have not enough space to click ,

Could you provide some screenshots or something please, so that I can get a better understanding of the issue.

my game resolution is 480X 640
map size 960 X 640
hud size 100X 640
the size of my map is 2 screen in the upper way

map