var numImg = 5;
var curImg = 1;
var timeFade = 2000;
var timeChange = 2000;

$(document).ready(function(){
	$('img', '#btn_imgs').mouseover(function(){
		var newImg = $(this).attr('src').replace('bttn_', 'button_');
		$(this).attr('src', newImg);
	}).mouseout(function(){
		var newImg = $(this).attr('src').replace('button_', 'bttn_');
		$(this).attr('src', newImg);
	});

	// setTimeout("chageTopImg()", timeChange);
});

function chageTopImg() {
	var newImg = (curImg < 5) ? curImg + 1 : 1;
	$('#td_img').css("background-image", "url(image/top/top" + newImg + ".jpg)");

	$('#div_img').fadeOut(timeFade, function(){
		$('#img_top').attr('src', 'image/top/top' + newImg + '.jpg');
		$(this).show().removeAttr('filter').children(0);
		curImg = newImg;

		setTimeout("chageTopImg()", timeChange);
	});
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}