function controlHoverOver(node) {
	node.style.backgroundPosition = 'bottom left';
}

function controlHoverOut(node) {
	node.style.backgroundPosition = 'top left';
}

var swing = 0;

function increaseFontSize() {
	
	var content = $.find('.centerContent h1, .centerContent h2, .centerContent h3, .centerContent p, .centerContent li, .centerContent span, .centerContent tr, .centerContent sup, .centerContent sub');
	$.each(content, function() {
	
		if($(this).css('fontSize') !== undefined) {
		
			var s = parseInt($(this).css('fontSize').split(" "));
		
		}
		
		if(swing <= 5) {
		
			s = s + 1;
		
		}
		
		$(this).css({
			fontSize: s + 'px'
		});
		
	});
	
	swing = swing + 1;
	
}

function decreaseFontSize() {

	var content = $.find('.centerContent h1, .centerContent h2, .centerContent h3, .centerContent p, .centerContent li, .centerContent span, .centerContent tr, .centerContent sup, .centerContent sub');
	$.each(content, function() {
	
		if($(this).css('fontSize') !== undefined) {
		
			var s = parseInt($(this).css('fontSize').split(" "));
		
		}
		
		if(swing >= -5) {
		
			s = s - 1;
		
		}
		
		$(this).css({
			fontSize: s + 'px'
		});
		
	});
	
	swing = swing - 1;
	 
}