I Dont see the script added to this page for troubleshooting?
anyway, try removing the == "" condition:
if(priceInfo[2] == "0") {
document.getElementById("LEDCart_1_ATCButton").style.display = "none"
} else {
document.getElementById("LEDCart_1_ATCButton").style.display = "inline"
}
when I add an item to the cart it is forcing the quantity to 0, this leads me to believe there is a problem in setting the available quantity column in the cart.
in the add to cart button code, the availbale quantity cart column should be bound to the productStock form element


