$(document).ready(function(){

		$("#menu_block5 > div").hide();
		$("#b5_cont0").show();
		$("#footer_cont").hide();

		    $("#menu_top > img").click(function () {
		    	if ($("#b5_cont0").is(":hidden")) {
	        		$("#menu_block5 > div").hide("slow");
					$("#b5_cont0").show("slow");
	        		$("#main_wrapper").css("background-image","");
	        		}
    		});
		    $("#menu_block1 > img").click(function () {
		    	if ($("#b5_cont1").is(":hidden")) {
	        		$("#menu_block5 > div").hide("slow");
					$("#b5_cont1").show("slow");
	        		$("#main_wrapper").css("background-image","url('image/haikei1.png')");
	        		}
    		});
		    $("#menu_block2 > img").click(function () {
		    	if ($("#b5_cont2").is(":hidden")) {
	        		$("#menu_block5 > div").hide("slow");
					$("#b5_cont2").show("slow");
	        		$("#main_wrapper").css("background-image","url('image/haikei2.png')");
	        		}
    		});
		    $("#menu_block3 > img").click(function () {
		    	if ($("#b5_cont3").is(":hidden")) {
	        		$("#menu_block5 > div").hide("slow");
					$("#b5_cont3").show("slow");
	        		$("#main_wrapper").css("background-image","url('image/haikei3.png')");
	        		}
    		});
		    $("#footer_label").click(function () {
		    	if ($("#footer_cont").is(":hidden")) {
	        		$("#footer_cont").slideDown("slow");
	        		$("#footer_label").text("▲　click!　▲");
	        		} else {
	        		$("#footer_cont").slideUp("slow");
	        		$("#footer_label").text("▼　で、ADDDRVって？…click!　▼");
	        		}
    		});
});