jQuery.preloadImages = function(){
	for(var i = 0; i<arguments.length; i++){
		jQuery("<img>").attr("src", arguments[i]);
	}
}
$.preloadImages("img/index/picture_hm01.gif","img/index/picture_kt01.gif","img/index/picture_sn01.gif","img/index/picture_an01.gif","img/index/picture_rs01.gif","img/index/picture_ta01.gif");