var cssMoji = "Small";
/* var topAuthor = "Kiyohara";*/

function setActiveStyleSheet(title) {
	var i, a, main;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
			a.disabled = true;
			if(a.getAttribute("title") == title) a.disabled = false;
		}
	}
	if(title.indexOf("Small") != -1)
		cssMoji = "Small";
	if(title.indexOf("Middle") != -1)
		cssMoji = "Middle";
	if(title.indexOf("Large") != -1)
		cssMoji = "Large";
}

function getActiveStyleSheet() {
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
	}
	return null;
}

function getPreferredStyleSheet() {
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1
		&& a.getAttribute("rel").indexOf("alt") == -1
		&& a.getAttribute("title")
		) return a.getAttribute("title");
	}
	return null;
}

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 setAuthorHtml(author) {
	var a;
	a = document.getElementById("authorArea");
	a.src = "perm"+author+".html";
	
}
*/
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 null;
}

window.onload = function(e) {

	$('fontsize').innerHTML = "<div id=\"mojisize\">文字サイズ</div><a href=\"#\" id=\"btnFontSmall\">文字サイズ小</a><a href=\"#\" id=\"btnFontMiddle\">文字サイズ中</a><a href=\"#\" id=\"btnFontLarge\">文字サイズ大</a><br class=\"clear\">";


	
	var cookie = readCookie("style");
	var title = cookie ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(cssMoji);

	Event.observe($('btnFontSmall') , 'click', function(e){setActiveStyleSheet('Small')}, false);
	Event.observe($('btnFontMiddle'), 'click', function(e){setActiveStyleSheet('Middle')}, false);
	Event.observe($('btnFontLarge') , 'click', function(e){setActiveStyleSheet('Large')}, false);

/*	setAuthorHtml(topAuthor); 
	Event.observe($('Kojima') , 'click', function(e){setAuthorHtml('Kojima')}, false);
	Event.observe($('Suzuki') , 'click', function(e){setAuthorHtml('Suzuki')}, false);
	Event.observe($('Ono') , 'click', function(e){setAuthorHtml('Ono')}, false);
	Event.observe($('Kidokoro') , 'click', function(e){setAuthorHtml('Kidokoro')}, false);
	Event.observe($('Kiyohara') , 'click', function(e){setAuthorHtml('Kiyohara')}, false); */
}

window.onunload = function(e) {
	var title = getActiveStyleSheet();
	createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);



/* --------------------------------------------------------
	FLASHの枠消
-------------------------------------------------------- */

function showFlash(file,width,height){
	document.write('<object data="'+file+'" type="application/x-shockwave-flash" height="'+height+'" width="'+width+'">');
	document.write('<param name="movie" value="'+file+'">');
	document.write('<param name="wmode" value="transparent">');
	document.write('<param name="quality" value="best">');
	document.write('</object>');
}