// JavaScript Document
function addClassName(id, classname) {
	$(id).addClass(classname);
}
	
function removeClassName(id, classname) {
	$(id).removeClass(classname);
}
	
function loadContent(id, filename) {
	$(id).load(filename);
}


function hideElement(id){
    $(id).hide();
}

function showElement(id){
    $(id).show();
}

function loadNavigation() {
	$('#header').load('/header.html', "", initNavigation);
	$('#footer').load('/footer.html');
}	

function loadSubNavigation(id, filename) {
	if(filename){
		//alert(filename);
		$(id).load(filename, "", initSubNavigation);
	}else{
		$('#sub_nav').load('subnav.html', "", initSubNavigation);
	}
}	


function initNavigation(){
	$(section).addClass('on');
}

function initSubNavigation(){
	$(subSection).addClass('on');
}

function is_array(input){
    return typeof(input)=='object'&&(input instanceof Array);
}

function loadWork(id){
	if(id>0 && id<work.length){
		
		if (is_array(work[id]))
		{
			loadContent('#execution', work[id][0]);
			$('#work_img').attr('src', work[id][1]);
		}
		else
		{
			loadContent('#execution', work[id]);		
		}
		
		removeClassName('#'+currentItem, 'on');
		currentItem=id;
		addClassName('#'+currentItem, 'on');
	}
}