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];}}
	}

//******************************************************************************
//	フォントサイズ変更
//******************************************************************************

	var default_size=80;
	var font_size;
	var cookie_size;
	var cookie;
	var ratio;

	function createCookie(name,value,days) {
		if (days) {
			var date = new Date();
			date.setTime(date.getTime()+(days*24*60*60*1000));
			var expires = "; expires="+date.toGMTString();
		}
		else expires = "";
		document.cookie = name+"="+value+expires+"; path=/";
	}

	function readCookie(name) {
		var nameEQ = name + "=";
		var ca = document.cookie.split(';');
		for(var i=0;i < ca.length;i++) {
			var c = ca[i];
			while (c.charAt(0)==' ') {
				c = c.substring(1,c.length);
			}
			if (c.indexOf(nameEQ) == 0) {
				return c.substring(nameEQ.length,c.length);
			}
		}
		return default_size;
	}

	function sizechange(ratio) {
		if ( parseInt(ratio,10) == 0 ) {
//			font_size = parseInt(cookie_size,10);
			font_size = parseInt(default_size,10);
		}
		if ( 40 < parseInt(font_size,10) && parseInt(ratio,10) < 0 ) {
			font_size = parseInt(font_size,10) + parseInt(ratio,10);
		}
		if ( 0 < parseInt(ratio,10) && parseInt(font_size,10) < 250 ) {
			font_size = parseInt(font_size,10) + parseInt(ratio,10);
		}
//alert("ratio="+ratio+" font_size=" + font_size);
		document.body.style.fontSize=font_size + '%';
	}

window.onload = function(e) {
	cookie_size = readCookie("fontSize");
//alert("cookie_size="+cookie_size+" default_size=" + default_size);
	if ((cookie_size == 'NaN') || (cookie_size == 'Null') || (cookie_size == 'undefined')) {
//	デフォルトサイズ
		cookie_size = default_size;
	}
	font_size = cookie_size;
//alert("cookie_size="+cookie_size+" font_size=" + font_size);
		document.body.style.fontSize=font_size + '%';

	MM_preloadImages('images/bckmessage_01.jpg','images/bckmessage_02.jpg','images/bckmessage_03.jpg','images/bckmessage_04.jpg','images/bckmessage_05.jpg','images/bckmessage_06.jpg','images/bckmessage_07.jpg','images/bckmessage_08.jpg','images/bckmessage_09.jpg','images/bckmessage_10.jpg','images/bckmessage_11.jpg','images/bckmessage_12.jpg','images/bckmessage_13.jpg');
}

window.onunload = function(e) {
	createCookie("fontSize", font_size, 365);
}