FCKEidtor automatically counts the number of input characters (IE)

<script type="text/javascript">
function FCKeditor_OnComplete(editorInstance)
{
var oEditor = ('fckPrdDescription');
=function ()
{
if( )
{
$("lblShowTextLength").innerText =;
}
else
{
var r = () ;
( ) ;
$("lblShowTextLength").innerText= ().length ;

}
if(parseInt($("lblShowTextLength").innerText)>100)
{
alert("There has reached 100 Chinese characters, please do not continue to enter!");
=(0,100);
$("lblShowTextLength").innerText =;
}
// $("ddd").value =;
}
if (("hidStatus").value=="Cancel")
{
="off";
}
}
</script>