function check(form){
  if (form.name.value.length == 0) { alert("姓名欄為必填!"); form.name.focus(); form.InsData.disabled=false; }
  if (form.email.value.length == 0) { alert("email為必填!"); form.email.focus(); form.InsData.disabled=false; }
  if (form.msg.value.length == 0) { alert("請留下發問內容!"); form.msg.focus(); form.InsData.disabled=false; }
  if (form.checknum.value.length == 0) { alert("驗證碼為必填!"); form.checknum.focus(); form.InsData.disabled=false; }
  var checkStr = form.email.value;
  if (checkStr!='') {
    if (checkmail(checkStr)) {form.email.focus(); form.InsData.disabled=true;}
  }
  
   var checkMsg = form.msg.value;
  if (checkMsg!='') {
    if (checkMsg.length > 200) {alert('請將字數控制在200字內!');form.msg.focus(); form.InsData.disabled=true;}
  } 

form.submit();
}
function confirmMail() {
  return confirm("您沒有信箱嗎？");
}
function checkmail(myEmail) {
  if (/^\w+([-+.]\w+)*@\w+([-.]\\w+)*\.\w+([-.]\w+)*$/.test(myEmail)){
  return (false);
  }else{
  alert("E-mail格式不正確");
  return (true);
  }
}