//Get cookie based on a search string
function get_cookie(Name) {
	var search_str = Name + "=";
	var value = "";
	if (document.cookie.length > 0) {
		name_start = document.cookie.indexOf(search_str);

		// if cookie exists
		if (name_start != -1) { 
			name_start += search_str.length;

			// set index of beginning of value
			pair_end = document.cookie.indexOf(";", name_start);
	
			// set index of end of cookie value
			if (pair_end == -1) {
				pair_end = document.cookie.length;
			}
			value=unescape(document.cookie.substring(name_start, pair_end));
		}
	}
	return value;
}
	
function set_cookie(name, value) {
	var current_date = new Date;
	var cookie_year = current_date.getFullYear() + 1;
	var cookie_month = current_date.getMonth();
	var cookie_day = current_date.getDate();

	var expires = new Date(cookie_year, cookie_month, cookie_day);
	
	var cookie_string = name + "=" + escape(value) + "; expires=" + expires.toGMTString();
	document.cookie = cookie_string;
}