function ebuy(id) {
ids = id;
}
function ecart(form_name) {
if (document.getElementById(ids).value == '' || (isNaN(document.getElementById(ids).value))) {
document.cart_quantity.cart_quantity.value = 1;
} else {
document.cart_quantity.cart_quantity.value = document.getElementById(ids).value; 
}
document.cart_quantity.products_id.value = ids;
}