//set font size

var fs_key = "mufont";

// get useragent
var ua = '';
var per = 'px';
if(navigator.userAgent.indexOf("MSIE") != -1){
	ua = 'IE';
	per = '%';
}

// size(px)
var fs_big = 16;
var fs_middle = 14;
var fs_small = 12;

// IE size(%)
var ie_fs_big = 100;
var ie_fs_middle = 87;
var ie_fs_small = 74;

//set button image

var big_button_on = "/shared/imgs/b_rnav_fsize_03_a.gif";
var big_button_off = "/shared/imgs/b_rnav_fsize_03_n.gif";
var middle_button_on = "/shared/imgs/b_rnav_fsize_02_a.gif";
var middle_button_off = "/shared/imgs/b_rnav_fsize_02_n.gif";
var small_button_on = "/shared/imgs/b_rnav_fsize_01_a.gif";
var small_button_off = "/shared/imgs/b_rnav_fsize_01_n.gif";