$(document).ready(function(){
			var nav = $("#navigation");
			$(".navimg",nav).mouseover(function(){
				this.src="/img/nav/" + this.title + ".jpg";
			});
			$(".navimg",nav).mouseout(function(){
				this.src="/img/nav/" + this.title + "_off.jpg";
			});
			
			var sidenav = $("#myubook");
			$(".navimg",sidenav).mouseover(function(){
				this.src="/img/myubook/menu/" + this.title + ".jpg";
			});
			$(".navimg",sidenav).mouseout(function(){
				this.src="/img/myubook/menu/" + this.title + "_off.jpg";
			});
			
			$(".question").click(function() {
				$(this).find(".answer").toggle();
			});
});

jQuery.fn.countdown = function(options) {
	/**
	 * app init
	*/	
	if(!options) options = '()';
	if(jQuery(this).length == 0) return false;
	var obj = this;	

	/**
	 * break out and execute callback (if any)
	 */
	if(options.seconds < 0 || options.seconds == 'undefined')
	{
		if(options.callback) eval(options.callback);
		return null;
	}

	/**
	 * recursive countdown
	 */
	window.setTimeout(
		function() {
			jQuery(obj).html(String(options.seconds));
			--options.seconds;
			jQuery(obj).countdown(options);
		}
		, 1000
	);	

	/**
     * return null
     */
    return this;
}


function setLocation(url){
    window.location.href = url;
}