/* 
	Jolin Yim
	jolin_yim@wgbh.org
	03.29.11
   ----------------------------------------------------*/
var num=1;
var len;
var currentUL;
var currentSection;
var loc;
var searchStr;

$(document).ready(function(){
	currentSection = $('body').attr('class');		//current section
	loc = window.location.toString();				//get url
	var locParts = loc.split("/");						//separate by /
	var locLength = locParts.length;					//total length of url array
	
	$('#nav ul').addClass("no-height");					
	$('#nav ul li').addClass('nav-list-items');			//prep li for animation
	//show current hav item
	if(currentSection=="")
	{
		//if it is P&T index
		currentUL = $('#pt_nav');
		searchStr = "./index.html";
	}else{
		//all other sections - search by currention/last part of url
		currentUL = $('#'+currentSection+'_nav');
		if(currentSection=="reading")
		{
			currentSection="readingbuddies";
		}
		//console.log(currentSection);
		if(currentSection=="sponsors")
		{
			searchStr = currentSection+"/index.html";
		}else if(currentSection=="activities" && locParts[locLength-1]!="books.html")
		{
			searchStr=currentSection+"/activities.html";
		}else if(currentSection=="helpinganimals"){
			searchStr=currentSection+"/index.html";
		}else{
			searchStr = currentSection+"/"+locParts[locLength-1];
		}
	}
	
	currentUL.removeClass('no-height').addClass('hide');		//prep current ul for animation
	currentUL.delay(500).slideDown("normal");					//slide down animation for ul
	var foundMatch = false;
	$('#nav a').each(function(){
		if(!foundMatch)
		{
			if($(this).attr('href').indexOf(searchStr) != -1){
				$(this).parent().addClass('current');
				foundMatch=true;
			}			
		}
	});
	
	len=$(currentUL).children().length;							//find total length of subsections
	showLI();	
	
	//nav hover animation - slide to right
	$('#nav li').hover(function() {
		$(this).children('a').addClass("on").animate({
			marginLeft: 10
		}, {duration:100, queue:false});
	}, function(){
		$(this).children('a').removeClass("on").animate({
			marginLeft: 0
		}, {duration:100, queue:false});
	});
	
});

//subsection animation - loop through total length of li and animate slide to right to reveal one by one
function showLI()
{
	if(num<=len)
	{
		var obj = $(currentUL).find('li:nth-child('+num+')');
		obj.animate({
			width:'100%'
			}, 90, function(){
				$(this).animate({marginLeft:0}, 80, function(){num++; showLI();});
				
		});
	}
}