javascript调用webservice

<script language="javascript">
var iCallID;
function onmyresult()
{
    if((event.result.error)&&(iCallID==event.result.id))
   {
      var xfaultcode = event.result.errorDetail.code;
      var xfaultstring = event.result.errorDetail.string;
      var xfaultsoap = event.result.errorDetail.raw;
   }
   else
   {
      service.innerHTML=event.result.value;
   }
}
function Send()
{
if(!service.Question)
 service.useService("../action/Question.asmx?WSDL","Question");
iCallID = service.Question.callService("SendAnswer","参数");
}

<div id="service" style="behavior:url(webservice.htc);text-align:center;" onresult="onmyresult();" height="20">

<input type="button" value="运行" οnclick="Send();">