function slide1()
{
	$('#slide1').animate({opacity: 0.0}, 2000);
	$('#slide2').animate({opacity: 1.0}, 2000);
}

function slide2()
{
	$('#slide2').animate({opacity: 0.0}, 2000);
	$('#slide3').animate({opacity: 1.0}, 2000);
}

function slide3()
{
	$('#slide3').animate({opacity: 0.0}, 2000);
	$('#slide4').animate({opacity: 1.0}, 2000);
}

$( function() {

	$('#slide2').css({opacity: 0.0});
	$('#slide2').show();
	$('#slide3').css({opacity: 0.0});
	$('#slide3').show();
  $('#slide4').css({opacity: 0.0});
	$('#slide4').show();
  
	window.setTimeout('slide1()', 12000);
	window.setTimeout('slide2()', 18000);
	window.setTimeout('slide3()', 24000);
	window.setTimeout('slide4()', 30000);

} );