$(function(){
	clearForms();
	setupVideo();
	animateSubnav();
	setupHelpBubble();
});

/** Sets up forms for auto-clear and auto-refill **/
function clearForms() {
    $('input#q').each(function() {
        var $this = $(this);
        var defaultVal = $this.val();
        $this.focus( function() {
            if( $this.val() == defaultVal ) {
                $this.val("");
            }
            $this.addClass('modified');
        }).focusout( function() {
            if( $this.val() == "" || $this.val() == defaultVal ) {
                $this.val(defaultVal);
                $this.removeClass('modified');
            } else {
                $this.addClass('modified');
            }
        });
    });
}

function setupHelpBubble() {
	$("#main").click(function(){
		$("#bar form .help .bubble").hide();
	});
	$("#bar form .help").click(function(){
		$("#bar form .help .bubble").toggle();
		return false;
	});
	$("#bar form .help a").click(function(){
		$("#bar form .help .bubble").toggle();
		return false;
	});
	$("#bar form .help p").click(function(){
		return false;
	});
}

function setupVideo() {
	var vimeo_id = 27251359;
	$("#video_player a").click(function(){
		$.ajax({
			url: 'http://vimeo.com/api/oembed.json?url=http%3A//vimeo.com/' + vimeo_id + '&width=700&autoplay=true&title=false&byline=false&portrait=false',
			dataType:'jsonp',
			success: function createVideo(json) {
				$('#video_player').html('<div class="vimeo">' + json.html + '</div>');		
			}
		});
		return false;
	});
}

function animateSubnav() {
	var wait = 100;
	var pause = 60;
	var transition = 500;
	var height = $("#subnav").height();
	$("#subnav").height(height);
	var section_last = readCookie("section");
	var path = window.location.pathname.split("/");
	var section_current = path[1];
	if (section_last != section_current) {
		var $subnav_items = $("#subnav ul li");
		var n = $subnav_items.length;
		$subnav_items.css("top",height);
		setTimeout(function(){
			var i = 0;
			showSubnav($subnav_items,i,n,transition,pause);
		},wait);
		createCookie("section",section_current,30);
	}
}
function showSubnav($subnav_items,i,n,transition,pause) {
	$subnav_items.eq(i).animate({top: 0},transition);
	i++;
	if(i<n) {
		setTimeout(function(){
			showSubnav($subnav_items,i,n,transition,pause);
		},pause);
	}
}

/* Cookies */
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}
function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}
function eraseCookie(name) {
	createCookie(name,"",-1);
}