function getDiagSize(elt) {
const baseWidth = Math.min(window.innerWidth, 800);
let multFact = 1;
function getDiagSize(elt) {
const baseWidth = Math.min(window.innerWidth, 800);
let multFact = 1;
element: "diag_" + i,
fen: diagrams[i].dataset.fen,
marks: diagrams[i].dataset.mks
element: "diag_" + i,
fen: diagrams[i].dataset.fen,
marks: diagrams[i].dataset.mks