function CheckForm()
{
    if(document.myform.GuestName.value==''){
      alert('姓名不能为空！');
      document.myform.GuestName.focus();
      return(false) ;
    }
  if(document.myform.GuestTitle.value==''){
    alert('主题不能为空！');
    document.myform.GuestTitle.focus();
    return(false);
  }
  if(document.myform.GuestTitle.value.length>30){
    alert('主题不能超过30字符！');
    document.myform.GuestTitle.focus();
    return(false);
  }
   var IframeContent=document.getElementById("editor").contentWindow;
   IframeContent.HtmlEdit.focus();
   IframeContent.HtmlEdit.document.execCommand('selectAll');
   IframeContent.HtmlEdit.document.execCommand('copy');
  var CurrentMode=editor.CurrentMode;
  if (CurrentMode==0){
       document.myform.GuestContent.value=editor.HtmlEdit.document.body.innerHTML; 
  }
  else if(CurrentMode==1){
       document.myform.GuestContent.value=editor.HtmlEdit.document.body.innerText;
  }
  if(document.myform.GuestContent.value==''){
    alert('内容不能为空！');
    editor.HtmlEdit.focus();
    return(false);
  }
  if(document.myform.GuestContent.value.length>65536){
    alert('内容不能超过64K！');
    editor.HtmlEdit.focus();
    return(false);
  }
  if(document.myform.CheckCode.value==''){
    alert('请输入您的验证码！');
    document.myform.CheckCode.focus();
    return(false);
  }
}
</script>

<script language="JavaScript">
<!--
//改变图片大小
function resizepic(thispic)
{
if(thispic.width>700) thispic.width=700;
}
//无级缩放图片大小
function bbimg(o)
{
  var zoom=parseInt(o.style.zoom, 10)||100;
  zoom+=event.wheelDelta/12;
  if (zoom>0) o.style.zoom=zoom+'%';
  return false;
}
-->