I made this with Command Signs and Stuff!
Make sure to put into command block! Chat has a limit ya' know!
Up: /give @p sign 1 0 {BlockEntityTag:{Text1:"{text:\"Up\",color:\"dark_gray\",clickEvent:{action:\"run_command\",value:\"/tp @p[r=3] ~ ~4 ~\"}}",Text2:"{text:\"Go Up the \"}",Text3:"{text:\"Elevator\"}"},display:{Name:"Up"}
Down: /give @p sign 1 0 {BlockEntityTag:{Text1:"{text:\"Down\",color:\"dark_gray\",clickEvent:{action:\"run_command\",value:\"/tp @p[r=3] ~ ~-4 ~\"}}",Text2:"{text:\"Go Down the \"}",Text3:"{text:\"Elevator\"}"},display:{Name:"Down"}}