window.addEvent('domready', function()
{
	$$('.gray-hover-default').addEvent('mouseover', function()
	{
		this.hide();
		this.getNext('.gray-hover-alt').show();
	});
	
	$$('.gray-hover-alt').addEvent('mouseout', function()
	{
		this.hide();
		this.getPrevious('.gray-hover-default').show();
	});
});