function init()
{
	current_element=0;
}

function nextElement()
{
	totalPolaroidElements = document.getElementsByClassName("polaroidItem");
	if((current_element+1)==totalPolaroidElements.length){
		current_element=0;
		hide = totalPolaroidElements.length;
	}else{
		current_element = current_element+1;
		hide = current_element-1;
	}
	
	var lunghezzaNewsticker = totalPolaroidElements.length-1;
	
	for(j=0;j<=lunghezzaNewsticker;j++)
	{
		var elementoSingolo = totalPolaroidElements[j].id; 
		//alert(elementoSingolo);
		
		if(j==current_element){
			Effect.Appear(elementoSingolo, { duration: 0.5 });
		}else{
			document.getElementById(elementoSingolo).style.display = "none";
		}
	}
	
}

function prevElement()
{
	totalPolaroidElements = document.getElementsByClassName("polaroidItem");
	
	if(current_element==0){
		current_element = totalPolaroidElements.length-1;
		hide = 0;
	}else{
		current_element = current_element-1;
		hide = current_element+1;
	}
	
	for(i=0;i<=(totalPolaroidElements.length);i++)
	{
		var elementoSingolo = totalPolaroidElements[i].id; 
		
		if(i==current_element){
			Effect.Appear(elementoSingolo, { duration: 0.5 });
		}else{
			document.getElementById(elementoSingolo).style.display = "none";
		}
	}
	
}