run live rate shipping modification on location change?

<script type="text/javascript">
//trying a different version to count how many of each category there are:
var countLarge = 0;
var LARGE = ["LARGE"];
var countLargeAccessories = 0;
var LARGE_ACCESSORIES = ["LARGE_ACCESSORIES"];
var countAccessories = 0;
var ACCESSORIES = ["ACCESSORIES"];

for (var p in fc_json.products) {
	if (jQuery.inArray(fc_json.products[p].category, LARGE) > -1) {
		countLarge += fc_json.products[p].quantity;
	}

	if (jQuery.inArray(fc_json.products[p].category, LARGE_ACCESSORIES) > -1) {
		countLargeAccessories += fc_json.products[p].quantity;
	}

	if (jQuery.inArray(fc_json.products[p].category, ACCESSORIES) > -1) {
		countAccessories += fc_json.products[p].quantity;
	}
}

if (countLarge > 0) {
	var package_count = countLarge + countLargeAccessories;
		 
	// sets average_weight to expected total weight
	var average_weight = fc_json.total_weight;

	if (package_count > 1) {
		average_weight = fc_json.total_weight/package_count;

		FC.checkout.config.orderLiveRateShipmentWeight = average_weight;
	}
}
</script>

/* BEGIN CUSTOM SHIPPING LOGIC */
 
//defines tiered rates for US (shippingCost) and Canada (CAshippingCost)
var country = (jQuery("#use_different_addresses").is(":checked") ? $("#shipping_country").val() : $("#customer_country").val());
var shippingCost = 0;
var CAshippingCost = 0;
var amount = fc_json.total_item_price;
	if (amount <= 30) {
		 shippingCost = 4.50;
		} else if (amount <= 90) {
		 shippingCost = 7.95; 
		} else if (amount <= 150) {
		 shippingCost = 10.95; 
		} else {
		 shippingCost = 15.95;
		}
	if (amount <= 90) {
		 CAshippingCost = 7.95;
		} else if (amount <= 150) {
		 CAshippingCost = 10.95; 
		} else {
		 CAshippingCost = 15.95;
		}
		

//defines FlatRateShipping method based on # of LARGE items	
var LargeFlatRate = 0;
LargeFlatRate = 40.00 * countLarge;
var LargeFlatRatePlus = 0;
LargeFlatRatePlus = LargeFlatRate + (7.95 * countLargeAccessories);

if (country == "US") {
	if (countLarge > 0 && countLargeAccessories > 0) {
		FC.customLiveShipping.remove("all"); //removes all live rates	
		FC.customLiveShipping.add(135, LargeFlatRatePlus, "", 'Standard Shipping'); //instead shows $40 flat rate for each Large item, plus $7.95 for each Large Accessory that can't fit in the same box (assuming that smaller accessories can fit in the same box).
	}
	else if (countLarge > 0) {
		FC.customLiveShipping.remove("all"); //removes all live rates	
		FC.customLiveShipping.add(125, LargeFlatRate, "", 'Standard Shipping'); //instead shows flat rate based on number of large items present and disregards other items (assuming they can go in one of the larger boxes)
	} else {
		FC.customLiveShipping.remove("all"); //removes all live rates
		FC.customLiveShipping.add(100, shippingCost, "", 'Standard Shipping'); //instead shows tiered rates based on total price of items
	}
} else if (country == "CA") {
	if (countLarge > 0) {
		//if any large items are present, break into multiple packages and add $5 to total shipping cost
		FC.customLiveShipping.update("all", "*" + package_count);
		FC.customLiveShipping.update("all", "+5");

	} else if (countLargeAccessories > 0) {
		FC.customLiveShipping.update ("all", "+10"); //adds $10 handling fee to orders including large_accessories but not large (to cover instances where other accessories/strings are ordered also, and can't be combined in a single box)
	} else {
		FC.customLiveShipping.update ("all", "+2.50"); //adds $2.50 handling fee to live rates for string and accessory orders
	} 
} else {
	if (countLarge > 0) {
		//if any large items are present, break into multiple packages and add $5 to total shipping cost
		FC.customLiveShipping.update("all", "*" + package_count);
		FC.customLiveShipping.update("all", "+5");
	} else if (countLargeAccessories > 0) {
		FC.customLiveShipping.update ("all", "+10"); //adds $10 handling fee to orders including large_accessories but not large
	} else {
		FC.customLiveShipping.update ("all", "+5"); //adds $5 handling fee to live rates for string and small accessory orders
	}
}
    /* END CUSTOM SHIPPING LOGIC */