var mylarPrices = { 100: 1.85, 250: 1.25, 500: 0.88, 1000: 0.55, 2500: 0.38, 5000: 0.28 }; function xcbCalcMylar(qty) { var btns = [100,250,500,1000,2500,5000]; btns.forEach(function(q){ var btn = document.getElementById(“m-btn-“+q); if(btn){ btn.style.background = q===qty ? “#0f172a” : “#f1f5f9”; btn.style.color = q===qty ? “#fff” : “#0f172a”; btn.style.border = q===qty ? “none” : “2px solid #e2e8f0”; } }); var unit = mylarPrices[qty]; var total = (unit * qty).toFixed(2); document.getElementById(“m-unit-price”).textContent = “$” + unit.toFixed(2); document.getElementById(“m-total-price”).textContent = “$” + parseFloat(total).toLocaleString(“en-US”, {minimumFractionDigits:2, maximumFractionDigits:2}); }