here is my code:

function figureSelector () {

    document.getElementById(rook).onclick = function  () {

        curr = 'rook';

    };

};



function moveLine(){

    document.getElementById(upButton).onclick = function() { 

            document.getElementById(curr).style.top = document.getElementById(curr).offsetTop - getPix() * 62  + px; 

            counter= counter + getPix();

    }; 

I want to write an universal function for a chess piece to move. All I want is, when one clicks the chess piece, and then presses the up button, it must go up.