function CheckSignForm(form){
  var errorStat=0;
  TrimSpace1(form.coname,"NCase");
         if(form.coname.value==""){
             alert("請輸入您的公司名稱");
             form.coname.focus();
             return false;
         }
  TrimSpace1(form.name,"NCase");
         if(form.name.value==""){
             alert("請輸入您的姓名");
             form.name.focus();
             return false;
         }
  TrimSpace1(form.cotel,"NCase");
  TrimSpace1(form.mobile,"NCase");
         if(form.cotel.value=="" && form.mobile.value==""){
             alert("請輸入您的聯絡電話");
             form.cotel.focus();
             return false;
         }
  TrimSpace1(form.email,"NCase");
         if(form.email.value==""){
             alert("請輸入您的E-Mail");
             form.email.focus();
             return false;
         }
         if(checkEmailAddress(form.email)==false){
             alert("請檢查您的E-Mail");
             form.email.focus();
             return false;
         }
  TrimSpace1(form.content,"NCase");
         if(form.content.value=="" || form.content.value=="發言內容"){
             alert("請輸入留言內容");
             form.content.focus();
             return false;
         }
  TrimSpace1(form.confirm,"NCase");
         if(form.confirm.value==""){
             alert("請輸入驗證碼");
             form.confirm.focus();
             return false;
         }
  if(errorStat==0) { return true; }
  else { return false; }
}