$(document).ready(function(){

	/** DEFAULTS **/
	var headerOpenHeight = 400;
	var headerClosedHeight = 250;
	var headerTop = -130;
	
	/** COLLAPSE HEADER **/
	$("#trigger_header").click(function(){
		if ($(this).hasClass("open")) {
			$("#header").animate({
				top: headerTop + "px",
				height: headerClosedHeight + "px"
			});
			$("#header_open").animate({
				opacity: 0
			});
			$("#content").animate({
 				paddingTop: "140px"
			});
			$("#nav").animate({
				top: "93px"
			});
			$("#trigger_header").addClass("closed");
			$("#trigger_header").removeClass("open");
			offsetHeight = headerClosedHeight;
		}
		else if ($(this).hasClass("closed")) {
			$("#header").animate({
				top: "0px",
				height: headerOpenHeight+ "px"
			});
			$("#header_open").animate({
				opacity: 1
			});
			$("#content").animate({
				paddingTop: headerOpenHeight + 20 + "px"
			});
			$("#nav").animate({
				top: "373px"
			});
			$("#trigger_header").removeClass("closed");
			$("#trigger_header").addClass("open");
		}
		return false;		
	});
	
	/** AUTO COLLAPSE HEADER **/
	
	$("body").oneTime(4000, function(){
				$("#trigger_header").addClass("closed");
				$("#trigger_header").removeClass("open");
				$("#header").animate({
					top: headerTop + "px",
					height: headerClosedHeight + "px"
				});
				$("#header_open").animate({
					opacity: 0
				});
				$("#content").animate({
				paddingTop: "140px"
				});
				$("#nav").animate({
					top: "93px"
				});
			});
	
	/** CLICK LINK COLLAPSE HEADER **/
	$(".scroll").click(function(){
		var offset = $($(this).attr("href")).offset();
		if ($("#trigger_header").hasClass("open")) {
			$("#trigger_header").addClass("closed");
			$("#trigger_header").removeClass("open");
			$("#header").animate({
				top: headerTop + "px",
				height: headerClosedHeight + "px"
			});
			$("#header_open").animate({
				opacity: 0
			});
			$("#content").animate({
				paddingTop: "140px"
			});
			$("#nav").animate({
				top: "93px"
			});
			$("body").scrollTo($(this).attr("href"), 500, {offset:-headerOpenHeight - 10});
			if ($(this).parent().parent().parent().attr("id") == "nav_container") {
			 $($(this).attr("href")).effect("highlight", {color: "#fef6d1"}, 2000);
			}
		}
		else if ($("#trigger_header").hasClass("closed")) {
			$("body").scrollTo($(this).attr("href"), 500, {offset:-130});
			if ($(this).parent().parent().parent().attr("id") == "nav_container") {
 			$($(this).attr("href")).effect("highlight", {color: "#fef6d1"}, 2000);
   }
		}
		return false;		
	});
	
	 $(".project_item:first").addClass("first_project_item");
	
});