function CommentFormController(commentOptions)
{
	this._LiveSiteUrl = commentOptions.avatarURL;
    this._NameNeeded = commentOptions.nameNeeded;
    this._CommentNeeded = commentOptions.commentNeededText;
	this._CommentLength = commentOptions.maxLength;
    this._CommentLengthWarning = commentOptions.commentLengthText;
    this._RatingBounds = commentOptions.ratingBoundsText;
    this._MaxRating = commentOptions.maxrating;
    this._SecurityNeeded = commentOptions.securityNeededText;
    this._UseSecurity = commentOptions.useSecurity;
    this._CommentRequired = parseInt(commentOptions.commentRequired, 10);//0: no comment, 1: required, 2: optional
    this._RatingRequired = parseInt(commentOptions.ratingRequired, 10);//0: no rating, 1: required, 2: optional, 3: inherit from review
}

CommentFormController.prototype = 
{
	UpdateAvatar : function() 
	{       	
		var avatar = document.getElementById("commentavatar");
		var selectlist = document.getElementById("avatarselect");
	    if(selectlist.value =='-1')
	    {
	        avatar.src = this._LiveSiteUrl + "/noimage.png";
	        return;
	    }
		avatar.src = this._LiveSiteUrl + "/" + selectlist.value;
	},	
	
	CommentSubmitButton : function(pAllowUserComments)
	{
		var form = document.commentForm;
		
	    //Have already commented
	    if(!form.requireUserRating || form.requireUserRating.value == 0)
	    {
	    	this._RatingRequired = 0;
	    }
	    
	    var userRating = form.userRating ? parseInt(form.userRating.value, 10) : 0;
	    if(pAllowUserComments && form.anonymousName != null)
	    {
	      if (form.anonymousName.value == '')
	      {
	        alert(this._NameNeeded);
	        form.anonymousName.focus();
			return false;
		  }
	    }
	    
	    if(this._RatingRequired > 0)
	    {
	    	//ignore optional and empty
	    	if(!form.userRating.value && this._RatingRequired == 2)
	    	{
	    		form.userRating.value = -1;
	    	}
	    	else if(isNaN(userRating) || userRating < 0 || userRating > this._MaxRating)
    	    {
    	        alert( this._RatingBounds + this._MaxRating );
    	        form.userRating.focus();
    	        return false;
    	    }
	    }	
		
	    var comment = '';
	    if(this._CommentRequired != 0)
	    {
	    	comment = form.comment.value;
		    comment = comment.replace(/^\s+/, '');
	    }	    
	    if (comment == '' && this._CommentRequired === 1)
	    {
			alert(this._CommentNeeded);
			form.comment.focus();
			return false;
		}
		if(comment.length > this._CommentLength)
		{
			alert( this._CommentLengthWarning + this._CommentLength);
			form.comment.focus();
			return false;
	    }
	
	    if(this._UseSecurity)
	    {
	       if (form.security_try.value=='')
	       {
		      alert(this._SecurityNeeded);
		      form.security_try.focus();
		      return false;
	       }
		}
	    else
	    {
	        return true;
	    }
	}	
}