function Validate_Form(frm)
{
	with(frm)
    {
    	if(!IsEmpty(comment_author_name, 'Please, enter Name.'))
        {
			return false;
        }
    	if(!IsEmpty(comment_author_email, 'Please, enter Email.'))
        {
			return false;
        }
		if(comment_author_email.value != '')
		{
			if(!IsEmail(comment_author_email, 'Please, enter valid Email.'))
			{
				return false;
			}		
		}
    	if(!IsEmpty(comment_content, 'Please, enter Comment.'))
        {
			return false;
        }
    }
	return true;
}