(function(){ var select = document.getElementById('mw-cat-select'); if(!select) return;
// Navigate on change select.addEventListener('change', function(){ var val = this.value; if(!val) return; // Build absolute URL when relative path used var url = (val.indexOf('http') === 0) ? val : (window.location.origin.replace(/\/$/,'') + val); window.location.href = url; });
// Auto-select the current category if on a category page try{ var path = window.location.pathname.replace(/\/$/,''); for(var i=0;i<select.options.length;i++){ var optVal = select.options[i].value; if(!optVal) continue; var check = optVal.replace(/\/$/,''); if(path.indexOf(check) !== -1){ select.selectedIndex = i; break; } } }catch(e){} })();