function prepare_ajax()
{
	$(document).ajaxSend(function(event, xhr, settings) {
		function getCookie(name) {
			var cookieValue = null;
			if (document.cookie && document.cookie != '') {
				var cookies = document.cookie.split(';');
				for (var i = 0; i < cookies.length; i++) {
					var cookie = jQuery.trim(cookies[i]);
					// Does this cookie string begin with the name we want?
					if (cookie.substring(0, name.length + 1) == (name + '=')) {
						cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
						break;
					}
				}
			}
			return cookieValue;
		}
		function sameOrigin(url) {
			// url could be relative or scheme relative or absolute
			var host = document.location.host; // host + port
			var protocol = document.location.protocol;
			var sr_origin = '//' + host;
			var origin = protocol + sr_origin;
			// Allow absolute or scheme relative URLs to same origin
			return (url == origin || url.slice(0, origin.length + 1) == origin + '/') ||
				(url == sr_origin || url.slice(0, sr_origin.length + 1) == sr_origin + '/') ||
				// or any other URL that isn't scheme relative or absolute i.e relative.
				!(/^(\/\/|http:|https:).*/.test(url));
		}
		function safeMethod(method) {
			return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
		}

		if (!safeMethod(settings.type) && sameOrigin(settings.url)) {
			xhr.setRequestHeader("X-CSRFToken", getCookie('csrftoken'));
		}
	});	
}

function del_order( order_id )
{
	// TODO: Add more confirmations/alerts
	$.post( '/customer/orders/del_order/', {
				'order_id': order_id
			}, function( data ){

			// TODO: What would happen when operation return? Currently
			// assume a redirect to orders/waiting
			window.location = '/customer/orders/state/waiting'
		});
}

function vote_order( order_id, score )
{
	$.post( '/customer/orders/vote/', {
				'order_id': order_id,
				'score': score
			}, function( data ){
				// TODO: What would happen when operation return? Currently
				// assume a redirect to orders/done
				window.location = '/customer/orders/state/done'
			} )
}

function apply_refund( order_id )
{
	// TODO: Add more confirmation/alerts
	// Display an input box asking for reasons and store it in
	// a field called 'reason' and replace the following line
	var reason = "I changed my mind"
	$.post( '/customer/orders/refund/', {
				'order_id': order_id,
				'reason': reason
			}, function( data ) {
				// TODO: When the return value is "success", what will it do?
				window.location = '/customer/orders/state/refund'
			} )
}