[jQuery] Shopping Cart Dynamic Price Update

[jQuery] Shopping Cart Dynamic Price Update


I'm writing a shopping cart and I'm trying to update the price on the
fly.
So I have this in my .js file:
$(function(){
    $('input.quantityInput').keyup(function(){
        updateQuantity(this);
    });
});
And, I'm starting to write this function:
function updateQuantity(input){
    var tp = "#totalPrice";
    var tilep = "#tilePrice";
    if (i.attr('value') < 10)
        var tilePrice = '6.95';
    else {
        var tilePrice = '5.95';
    }
    var dollars = i.attr('value')*tilePrice;
    $(tp).empty().append(DollarFormat(dollars));
}
But instead of hardcoding the price breaks, I want to make that
dynamic.
The price break is a list which I have in a Coldfusion list variable
in my .cfm file where I include the .js file above.
Any thoughts on how to do this?
Can I pass the list of price breaks variable into Jquery somehow and
then loop through it?