/* cookie */

function set_cookie(name, value, expires, path, domain, secure) {
	var today = new Date();
	today.setTime(today.getTime());
	if (expires) {
		expires = expires * 1000 * 60 * 60 * 24;
	} else {
		expires = 0;
	}
	var expires_date = new Date(today.getTime() + (expires));
	document.cookie = name + "=" +escape(value) +
	((expires) ? ";expires=" + expires_date.toGMTString() : "") + 
	((path) ? ";path=" + path : "") + 
	((domain) ? ";domain=" + domain : "") +
	((secure) ? ";secure" : "");
}

function get_cookie(check_name) {
	var a_all_cookies = document.cookie.split(';');
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false;
	
	for (var i = 0; i < a_all_cookies.length; i++) {
		a_temp_cookie = a_all_cookies[i].split('=');
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');
		if (cookie_name == check_name) {
			b_cookie_found = true;
			if (a_temp_cookie.length > 1) {
				cookie_value = unescape(a_temp_cookie[1].replace(/^\s+|\s+$/g, ''));
			}
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if (!b_cookie_found) {
		return null;
	}
}

function delete_cookie(name, path, domain) {
	if (get_cookie(name)) {
		document.cookie = name + "=" +
		((path) ? ";path=" + path : "") +
		((domain) ? ";domain=" + domain : "") +
		";expires=Thu, 01-Jan-1970 00:00:01 GMT";
	}
}

function check_affiliate() {
	if (document.location.search) {
		var search_string = document.location.search.substring(1,document.location.search.length);
		var temp = search_string.split('&');
		for (var i = 0; i < temp.length; i++) {
			var temp2 = temp[i].split('=');
			if (temp2[0] == 'ref') {
				var referrer_string = '';
				if (document.referrer) {
					referrer_string = document.referrer;
				}
  				set_cookie('affiliate',temp2[1]+'|'+referrer_string,'','/','','');
			}
		}
	}
}

check_affiliate();