// JavaScript Document
$(document).ready(function() {
	$("#paypalForm").submit(function() {
		var iName, iNumber, totalPrice, price, books = parseInt($("#books").val());
		//alert($("#books").val());
		if(isNaN(books) || books < 1) {
			alert("Please insert a valid amount of books.");
			return false;
		}
		//alert('books:' + books);
		if(books > 999) {
			price = 2.95;
		}
		else if(books > 99) {
			price = 3.95;
		}
		else if(books > 29) {
			price = 4.45;
		}
		else {
			price = 4.95;
		}
		//alert('price: ' +price);
		totalPrice = books*price;
		totalPrice = totalPrice.toFixed(2);
		//alert('total: ' + totalPrice);
		if(books == 1) {
			iName = books+" Pocket Constitution for $"+price;
		}
		else {
			iName = books+" Pocket Constitutions at $"+price+" each";
		}
		iNumber = iName;
		$("#item_name").val(iName);
		$("#item_number").val(iNumber);
		$("#amount").val(totalPrice);
		return true;
	});
});