var cookie_expire = 3 ; //Cookieの有効時間(日)
var cookie_name = 'css_type' ; //Cookieの名前

function setCookie(item, value, day) {
	date_obj = new Date( ) ;
	date_obj.setTime(date_obj.getTime( ) + 24*60*60*1000*day) ;
	var expire = date_obj.toGMTString( ) ;
	document.cookie = item + "=" + value + ";expires=" + expire ;
}

function getCookie(item) {
	var i, index, arr ;
	arr = document.cookie.split(";") ;
	for (i=0; i<arr.length; i++) {
		index = arr[i].indexOf("=") ;
		if (arr[i].substring(0, index) == item || arr[i].substring(0, index) == " " + item) {
		    return arr[i].substring(index+1) ;
		}
	}
	return '' ;
}

function setCss(id) {
	setCookie(cookie_name, id, cookie_expire) ;
	location.reload( ) ;
}

function getCss( ) {
	var id = getCookie(cookie_name) ;
	if (id == '') {
		id = default_id ;
	}
	//self.alert('"'+css_array[id]+'"') ;
	document.write("<link rel='stylesheet' href='" + css_array[id] + "' type='text/css'>") ;
}

getCss( ) ;