isNS4 = (document.layers) ? true : false;
isIE4 = (document.all && !document.getElementById) ? true : false;
isIE5 = (document.all && document.getElementById) ? true : false;
isNS6 = (!document.all && document.getElementById) ? true : false;
function getObj(idname) {
if (isNS4){
elm = document.layers[idname];
}
else if (isIE4) {
elm = document.all[idname];
}
else if (isIE5 || isNS6) {
elm = document.getElementById(idname);
}
return elm;
}
function toggleTab(tab_id,img_id) {
var tab =  getObj(tab_id);
var img = document.images[img_id];

if ( tab.style.display=='block' ) {
tab.style.display = 'none';
if ( img_id != '' ) img.src = "/images/common/menu/top/select_btn1.gif";
}
else {
tab.style.display='block';
if ( img_id != '' ) img.src = "/images/common/menu/top/select_btn2.gif";
}
}
function toggleTab1(tab_id,img_id) {
var tab =  getObj(tab_id);
var img = document.images[img_id];

if ( tab.style.display=='block' ) {
tab.style.display = 'none';
if ( img_id != '' ) img.src = "/images/common/menu/top/select_btn.gif";
}
else {
tab.style.display='block';
if ( img_id != '' ) img.src = "/images/common/menu/top/select_btn_3.gif";
}
}

function f_chkLogin(){
var cookie = document.cookie;
var info=document.cookie.split(";");
var cust_id = '';
for (var i=0; i<info.length; i++) {
if (info[i].replace(/(^\s*)|(\s*$)|($\s*)/g, "").indexOf("cust_id")==0) {
cust_id=info[i].substring(info[i].indexOf("=")+1,info[i].length);
}
}
if(cust_id==''||cust_id==null||cust_id=='null'){
return '0';
}else{
return '1';
}
}