function class_cookielib(){ 
this.getCookie = getCookie; 
this.setCookie = setCookie; 
this.removeCookie = removeCookie; 

var expireDate = new Date(); 
expireDate.setFullYear(expireDate.getFullYear()+1); 
expireStr = "expires=" + expireDate.toUTCString(); 

function getCookie(name){ 
	var gc=name+"="; 
	var Cookie=document.cookie; 
	if (Cookie.length>0) { 
		var start=Cookie.indexOf(gc); 
		if (start!=-1) { 
			start+=gc.length; 
			terminus=Cookie.indexOf(";",start); 
		if (terminus==-1) terminus=Cookie.length; 
			return unescape(Cookie.substring(start,terminus)); 
		} 
	} 
	return ''; 
} 
function setCookie() { 
	var key = arguments[0]; 
	var val = arguments[1]; 
	var path = (typeof(arguments[2]) != 'undefined' ? arguments[2] : '/'); 
	var exp = (typeof(arguments[3]) != 'undefined' ? arguments[3] : expireStr); 
	var sc = key + "=" + escape(val) + "; path=" + path + "; " + exp; 
	document.cookie = sc; 
} 
function removeCookie(key,path) { 
	if(!path){ 
		path = '/'; 
	} 
	var rc = key + "=; path=" + path + "; expires=Thu, 1 Jan 1970 00:00:00 UTC"; 
	document.cookie = rc; 
	} 
} 
var cookieObj = new class_cookielib(); 

function onresize_handler(){ 
	if(document.layers){ 
		window.location.reload(); 
	} 
} 
window.onresize = onresize_handler; 

var txtsize_val = 1; 
var txtsize_css_size = new Array(); 
txtsize_css_size[0] = '75%'; 
txtsize_css_size[1] = '100%'; 
txtsize_css_size[2] = '125%'; 

function setTextSize(){ 
	if(cookieObj.getCookie('txtsize') != ''){ 
		txtsize_val = 1 * cookieObj.getCookie('txtsize'); 
	}
	
	var root_url = "https://ssl97.heteml.jp/niigata-sake/sake/";
	if(txtsize_val == 0){
		document.small_ts.src = root_url + "img/common/fsize_s_active.gif";
		document.default_ts.src = root_url + "img/common/fsize_m.gif";
		document.large_ts.src = root_url + "img/common/fsize_l.gif";
	
	}else if(txtsize_val == 1){
		document.small_ts.src = root_url + "img/common/fsize_s.gif";
		document.default_ts.src = root_url + "img/common/fsize_m_active.gif";
		document.large_ts.src = root_url + "img/common/fsize_l.gif";
	}else{
		document.small_ts.src = root_url + "img/common/fsize_s.gif";
		document.default_ts.src = root_url + "img/common/fsize_m.gif";
		document.large_ts.src = root_url + "img/common/fsize_l_active.gif";
		
	}
	
	/*
	document.write('<style type="text/css">'); 
	document.write('* body { font-size:' + txtsize_css_size[txtsize_val] + '; }'); 
	document.write('</style>'); 
	*/
	document.write('<style type="text/css">'); 
	document.write('#contents { font-size:' + txtsize_css_size[txtsize_val] + '; }'); 
	document.write('</style>'); 
} 

/*function changeTextSize(num){ 
	var fl_update = false; 
	var tmp_val = txtsize_val + num; 
	if(tmp_val >= 0 && tmp_val < txtsize_css_size.length){ 
		txtsize_val = tmp_val; 
		fl_update = true; 
	} 
	if(fl_update){ 
		cookieObj.setCookie('txtsize',txtsize_val,'/',''); 
		window.location.reload(); 
	} 
} */

function defaultTextSize(){ 
	var fl_update = false; 
	var tmp_val = 1; 
	if(tmp_val >= 0 && tmp_val < txtsize_css_size.length){ 
		txtsize_val = tmp_val; 
		fl_update = true; 
	} 
	if(fl_update){ 
		cookieObj.setCookie('txtsize',txtsize_val,'/',''); 
		window.location.reload();
		
	} 
} 

function smallTextSize(){ 
	var fl_update = false; 
	var tmp_val = 0; 
	if(tmp_val >= 0 && tmp_val < txtsize_css_size.length){ 
		txtsize_val = tmp_val; 
		fl_update = true;
	}
	if(fl_update){ 
		cookieObj.setCookie('txtsize',txtsize_val,'/',''); 
		window.location.reload();
	}
	
} 

function largeTextSize(){ 
	var fl_update = false; 
	var tmp_val = 2; 
	if(tmp_val >= 0 && tmp_val < txtsize_css_size.length){ 
		txtsize_val = tmp_val; 
		fl_update = true; 
	} 
	if(fl_update){ 
		cookieObj.setCookie('txtsize',txtsize_val,'/',''); 
		window.location.reload(); 
	} 
}