function addToCart(id, name, price, qty) {
    document.forms['paypal_form'].cmd.value = "_cart";
    document.forms['paypal_form'].item_number.value = id;
    document.forms['paypal_form'].item_name.value = name;
    document.forms['paypal_form'].amount.value = price;
    document.forms['paypal_form'].quantity.value = qty;  
    document.forms['paypal_form'].display.value = "0";  
    document.forms['paypal_form'].submit();
	
}

function displayCart() {
    document.forms['paypal_form'].cmd.value = "_cart";
    document.forms['paypal_form'].add.value = "0";  
    document.forms['paypal_form'].display.value = "1";  
    document.forms['paypal_form'].submit();
}

function buyNow(id, name, price, qty) {
    document.forms['paypal_form'].cmd.value = "_xclick";
    document.forms['paypal_form'].item_number.value = id;
    document.forms['paypal_form'].item_name.value = name;
    document.forms['paypal_form'].amount.value = price;
    document.forms['paypal_form'].quantity.value = qty;  
    document.forms['paypal_form'].display.value = "0";  
    document.forms['paypal_form'].submit();
}