What would be the best method?

Ok I think Igot it right and it sort of works but if I move the mouse fast enough it will still jump the maze.
oh here my messy code.
Edited changed code. This seems to work better but still if I move the mouse fast it still jumps.

		load2dmaze("levels\2d\1")
	MoveMouse start2x,start2y 
	MaskImage maze2,255,255,255
	


	ClsColor 255,255,255
	While Not KeyDown(1)
		Cls
		Color 0,0,0
		Text 0,0,MouseX() + " " + MouseY()

			DrawImage maze2,0,0
			
			If ImagesCollide(mouse2d,MouseX(),MouseY(),0,maze2,0,0,0)
				MoveMouse mx,my
			Else
				mx = MouseX()
				my = MouseY()
			EndIf 
DrawImage mouse2d,MouseX(),MouseY()
		
		Flip
	Wend 
	End