function chatOpen() {
    window.open('','chat','scrollbars=yes,toolbar=no,location=no,directories=no,width=680,height=560,resizable=yes,mebar=no,left=50,top=65');
    document.frmChat.action = "http://210.103.4.158:8082/userEnterCheck.jsp";
    document.frmChat.target = "chat";
    document.frmChat.method = "post";
    document.frmChat.submit();
}