jQuery(document).ready(function(){
	setTimeout(function(){
		$("#header_image_a").animate({opacity: "show"}, "normal");
		$("#header_image_b").animate({opacity: "hide"}, "normal");
	}, 1000);

	$("#header").hover(
		function(){
			$("#header_image_a").animate({opacity: "hide"}, "fast");
			$("#header_image_b").animate({opacity: "show"}, "fast");
			$("#header_caption").animate({opacity: "show", top: "155px"}, "fast");
		},
		function(){
			$("#header_image_a").animate({opacity: "show"}, "fast");
			$("#header_image_b").animate({opacity: "hide"}, "fast");
			$("#header_caption").animate({opacity: "hide", top: "175px"}, "fast");
		});
});