$(document).ready(function() {
	$('.leftSubNav').hide();
	
	$('.leftNav .leftNavItem').hover(function() {
		var index = $('.leftNav .leftNavItem').index(this) + 1;
		var leftSubNavId = "leftSubNav"+index;
		var $leftSubNavArr = $('.leftSubNav');
		for(var i=0; i < $leftSubNavArr.length; i++){
			if($leftSubNavArr[i].id != leftSubNavId)
				$leftSubNavArr[i].style.display = "none";
		}
		$('#leftSubNav' + index).show();
	}, function() {
		$('.leftSubNav').hide();
		
		var index = $('.leftNav .leftNavItem').index(this) + 1;
		$('#leftSubNav' + index).hover(function() {
			$('#leftSubNav' + index).show();
		}, function() {
			var leftSubNavId = "leftSubNav"+index;
			var $leftSubNavArr = $('.leftSubNav');
			for(var i=0; i < $leftSubNavArr.length; i++){
				if($leftSubNavArr[i].id != leftSubNavId)
					$leftSubNavArr[i].style.display = "none";
			}
			$('#leftSubNav' + index).show();
		});
	});
	
});