$(document).ready(function(){
	//footer should be at the bottom of the page
	var contentDiv = $('#content');
	var headHeight = $('#main_head').outerHeight(true);
	var footHeight = $('#main_foot').outerHeight(true);
	var contentHeight = contentDiv.height();
	var docHeight = headHeight + contentHeight + footHeight;

	$(window).resize(function() {
		if ($(window).height() >= docHeight) {
			contentDiv.height($(window).height() - headHeight - footHeight);
		} else {
			contentDiv.height(contentHeight);
		}
	}).trigger('resize');

// ---------------------------------------

	//open links with "rel=external" in a new window
	$('a[rel*="external"]').click(function(e){
		e.preventDefault();
		window.open(this.href);
	});

// ---------------------------------------

	//animate dropdown menu
	$('#menu li').each(function(){
		var ul = $(this).find('ul');
		
		if(ul.length > 0) {
			ul.animate({opacity: 0, height: 'hide'});
			
			$(this).hover(function(){
				$(this).addClass('sfhover');
				ul.stop(true, true);
				ul.animate({opacity: 0.85, height: 'show'}, 600, 'easeOutQuad');
			}, function(){
				ul.stop(true, true);
				ul.animate({opacity: 0, height: 'hide'}, 600, 'easeOutQuad', function(){
					$(this).removeClass('sfhover');
				});
			});
		}
	});

// ---------------------------------------

	//mouseover for menu-elements
	$('#menu li').hover(function(){
		$(this).addClass('hover');
	}, function(){
		$(this).removeClass('hover');
	});
});