var page_top = false;
var page_top_scrolled = false;
var page_top_offset = 190;
var menu_hidden = 'no';

$(window).scroll(function() {
	navbarSetup();
});

function navbarSetup() 
{
	if(typeof(window.pageYOffset) == 'number')
	{
		page_top = window.pageYOffset;
	}
	else if(document.body && document.body.scrollTop)
	{
		page_top = document.body.scrollTop;
	}
	else if(document.documentElement && document.documentElement.scrollTop)
	{
		page_top = document.documentElement.scrollTop;
	}
	page_top -= page_top_offset;
	navbarFloat();
}

function navbarFloat()
{
	if (page_top > 0)
	{
		$('#menu').removeClass('menu').addClass('float');
		if (!page_top_scrolled) {
			$('#themenu').hide();
			if ($('#showhidemenu').hasClass('shown')) {
				$('#showhidemenu').removeClass('shown').addClass('hidden');
			}
		}
		page_top_scrolled = true;
	}
	if (page_top <= 0)
	{
		$('#menu').removeClass('float').addClass('menu');
		$('#themenu').show();
		if ($('#showhidemenu').hasClass('shown')) {
			$('#showhidemenu').removeClass('shown').addClass('hidden');
		}
		page_top_scrolled = false;
	}

}