我正在使用下面的代码生成一封电子邮件，如果投诉文本框大于 30-40 个字符，则电子邮件不会生成，我只会得到一个空白的 IE 页面。有某种限制吗？
<script type="text/javascript">
function sendMail(CustomerTextbox, AddressTextBox, CityTextBox, StateDropDown, ZipTextBox, ModelTextbox, SerialTextbox, ReferenceTextbox, ComplaintTextBox, WarrentyTextBox) {
var CustomerTextbox = document.getElementById(CustomerTextbox).value;
var AddressTextBox = document.getElementById(AddressTextBox).value;
var CityTextBox = document.getElementById(CityTextBox).value;
var StateDropDown = document.getElementById(StateDropDown).value;
var ZipTextBox = document.getElementById(ZipTextBox).value;
var ModelTextbox = document.getElementById(ModelTextbox).value;
var SerialTextbox = document.getElementById(SerialTextbox).value;
var ReferenceTextbox = document.getElementById(ReferenceTextbox).value;
var ComplaintTextBox = document.getElementById(ComplaintTextBox).value;
var WarrentyTextBox = document.getElementById(WarrentyTextBox).value;
var body = "Please issue a RMA for this case." + "\r\n";
body += CustomerTextbox + "\r\n";
body += AddressTextBox + "\r\n";
body += CityTextBox + "\r\n";
body += StateDropDown + "\r\n";
body += ZipTextBox + "\r\n";
body += ModelTextbox + "\r\n";
body += SerialTextbox + "\r\n";
body += ReferenceTextbox + "\r\n";
body += ComplaintTextBox + "\r\n";
body += WarrentyTextBox + "\r\n";
document.location = "mailto:&subject=" + "Name - " + CustomerTextbox + "&body=" + escape(body);
}