function mainmenu(){
$("ul#nav li").hover(function(){
	$(this).addClass('active');
	$(this).find('ul').find('li').removeClass('active');
	$(this).find('ul:first').css({visibility: "visible",display: "none"}).fadeIn(400);
}, function() {
	$(this).removeClass('active');
	$(this).find('ul:first').css({visibility: "hidden"});
});

}
function changeScreenshotFadeOut() {
	$('#portfolioItem .screenshot .images img').fadeOut(500);
	$('.screenshotLinks a').removeClass('active');
}

function changeScreenshot1() {
	$('#portfolioItem .screenshot .images img.screenshot1').fadeIn(500);
	$('a.changeScreenshot1').addClass('active');
}

function changeScreenshot2() {
	$('#portfolioItem .screenshot .images img.screenshot2').fadeIn(500);
	$('a.changeScreenshot2').addClass('active');
}

function changeScreenshot3() {
	$('#portfolioItem .screenshot .images img.screenshot3').fadeIn(500);
	$('a.changeScreenshot3').addClass('active');
}

function changeScreenshot4() {
	$('#portfolioItem .screenshot .images img.screenshot4').fadeIn(500);
	$('a.changeScreenshot4').addClass('active');
}

$(function() {
	$('.screenshotLinks a').click(function() { changeScreenshotFadeOut(); return false; });
	$('a.changeScreenshot1').click(function() { changeScreenshot1(); });
	$('a.changeScreenshot2').click(function() { changeScreenshot2(); });
	$('a.changeScreenshot3').click(function() { changeScreenshot3(); });
	$('a.changeScreenshot4').click(function() { changeScreenshot4(); });
	
	mainmenu();
});