var name = 'cookie';

window.onload =function read(){
	var data = document.cookie + ';';
	var leng = data.length;
	var cssdata = data.indexOf("cookie",0);
	if(!leng == 0){
	var cssname = document.cookie.substring( 7,19);
	
	var cstyle = document.getElementById('changeStyle');
	var def = 'css/base.css';
	var rev = 'css/reve.css';
	if(cssname == def){
	cstyle.setAttribute("href","css/reve.css");
	}else{
	cstyle.setAttribute("href","css/base.css");	
	}

	}
	return("");
}


function replace_css(id,url){
	if(!document.getElementById) return false;
	var element = document.getElementById(id);
	if(!element || !element.cloneNode) return false;
	var new_node = element.cloneNode(true); 
	var changecss = element.getAttribute("href");
	if(changecss == 'css/reve.css'){
		new_node.href = 'css/base.css';
		}else{
		new_node.href = 'css/reve.css';
	}
	element.parentNode.replaceChild(new_node,element);

//	var name = 'cookie'; // cookie名
	var keepTime = 1 * 1000 * 60 * 60 * 24; // 保存期間
//	var data = changecss;
	var day = new Date();

	day.setTime(day.getTime() + keepTime);
	var check = document.cookie = name + '=' + changecss + ';expires=' + day.toGMTString()+";";
	return true;
}