function CheckFilenameChars( objFileUpload )
    {
    if( objFileUpload.value.length == 0 ) 
        return( false );

    for( var i=0; i<objFileUpload.value.length; ++i )  
    {
        var ch = objFileUpload.value.charAt(i);
        if( ch == ',' ) 
            return( true );
    }

    return( false );
    }