$(function(){	
var $width      = 1100; // 横幅
var $height     = 590; // 高さ
var $interval   = 10000; // 切り替わりの間隔(ミリ秒)
var $fade_speed = 3000; // フェード処理の早さ(ミリ秒)
 
$("#main_image").css({"position":"relative","overflow":"hidden","width":$width,"height":$height});
$("#main_image img").hide().css({"position":"absolute","top":0,"left":0});
$("#main_image img:first").addClass("active").show();
setInterval(function(){
		var $active = $("#main_image img.active");
		var $next = $active.next("img").length?$active.next("img"):$("#main_image img:first");
		$active.fadeOut($fade_speed).removeClass("active");
		$next.fadeIn($fade_speed).addClass("active");
},$interval);
});