//SHOW BOOK BOX FUNCTION
function showBoxs(elem){
	var x = document.getElementById(elem);	
	x.style.visibility = "visible";
}

//HIDE BOOK BOX FUNCTION
function hideBoxs(elem){
	var x = document.getElementById(elem);	
	x.style.visibility = "hidden";
}

//STAR FUNCTIONS
function updateRatingBox(rating){
       document.getElementById('rs_rating').value = rating;
       if(rating == 1){
           document.getElementById('ratingStars').className = "rating onestar";
       } else if(rating == 1){
           document.getElementById('ratingStars').className = "rating onestar";
       } else if(rating == 2){
           document.getElementById('ratingStars').className = "rating twostar";
       } else if(rating == 3){
           document.getElementById('ratingStars').className = "rating threestar";
       } else if(rating == 4){
           document.getElementById('ratingStars').className = "rating fourstar";
       } else if(rating == 5){
           document.getElementById('ratingStars').className = "rating fivestar";
       }
}

//CLEAR FORM FUNCTION
function clearForm(elem){
        var currentValue = elem.value;
        var newValue = '';      

        if(currentValue == "name"){
               newValue = '';
        } else if(currentValue == 'company'){
               newValue = '';
        } else if(currentValue == 'position'){
               newValue = '';
        } else if(currentValue == 'email'){
               newValue = '';
        } else if(currentValue == 'contact phone'){
               newValue = '';
        } else if(currentValue == 'address'){
               newValue = '';
        } else if(currentValue == 'city'){
               newValue = '';
        } else if(currentValue == 'postcode'){
               newValue = '';
        } else if(currentValue == 'title of comment'){
               newValue = '';
        } else if(currentValue == 'comment'){
               newValue = '';
        } else if(currentValue == 'location'){
               newValue = '';
        } else {
               newValue = currentValue;
        }

	elem.value = newValue;
}

function unclearForm(elem){
        var currentValue = elem.value;
        var oldValue;

        if(elem.value == ''){
            if(elem.name == 'name'){
                oldValue = 'name';
            } else if(elem.name == 'company'){
                oldValue = 'company';
            } else if(elem.name == 'position'){
                oldValue = 'position';
            } else if(elem.name == 'email'){
                oldValue = 'email';
            } else if(elem.name == 'contactPhone'){
                oldValue = 'contact phone';
            } else if(elem.name == 'address'){
                oldValue = 'address';
            } else if(elem.name == 'city'){
                oldValue = 'city';
            } else if(elem.name == 'postcode'){
                oldValue = 'postcode';
            } else if(elem.name == 'location'){
                oldValue = 'location';
            } else if(elem.name == 'comment'){
                oldValue = 'comment';
            } else if(elem.name == 'title'){
                oldValue = 'title of comment';
            }
        } else {
            oldValue = currentValue;
        }

        elem.value = oldValue;
}