function font_size_kakikomi(fontsize)
{

 setDay = new Date();
 setDay.setTime(setDay.getTime()+(30*1000*60*60*24));　//30日間保存;
 expDay = setDay.toGMTString();
 document.cookie = "fontsize="+fontsize+"; expires="+expDay;

}


function small()
{
	document.getElementById("style").href = "http://honnyaku.okunohosomichi.net/stylesheet/style-small.css";
        document.pic_small.src = "http://honnyaku.okunohosomichi.net/stylesheet/small-b.png";
        document.pic_middle.src = "http://honnyaku.okunohosomichi.net/stylesheet/middle-a.png";
        document.pic_large.src = "http://honnyaku.okunohosomichi.net/stylesheet/large-a.png";

        font_size_kakikomi("small");

}

function middle()
{
	document.getElementById("style").href = "http://honnyaku.okunohosomichi.net/stylesheet/style-middle.css";
        document.pic_small.src = "http://honnyaku.okunohosomichi.net/stylesheet/small-a.png";
        document.pic_middle.src = "http://honnyaku.okunohosomichi.net/stylesheet/middle-b.png";
        document.pic_large.src = "http://honnyaku.okunohosomichi.net/stylesheet/large-a.png";

        font_size_kakikomi("middle");

}

function large()
{
	document.getElementById("style").href = "http://honnyaku.okunohosomichi.net/stylesheet/style-large.css";
        document.pic_small.src = "http://honnyaku.okunohosomichi.net/stylesheet/small-a.png";
        document.pic_middle.src = "http://honnyaku.okunohosomichi.net/stylesheet/middle-a.png";
        document.pic_large.src = "http://honnyaku.okunohosomichi.net/stylesheet/large-b.png";

        font_size_kakikomi("large");

}