function innerYear(xX) {
	idArray = new Array;
	var domNavigation = document.getElementById('blocnews')
	for (i=0; i<domNavigation.childNodes.length; i++){
		if (domNavigation.childNodes[i].nodeType == 1 && domNavigation.childNodes[i].id != "" ){
		idArray.push(domNavigation.childNodes[i].id)
		}
	}
	var idArrayTaille = idArray.length;
	
	var myAction = xX.id;
	var myYear = document.getElementById('year').innerHTML;
	var newMyYearMore = parseInt(myYear)+1;
	var newMyYearLess = parseInt(myYear)-1;
	if (myAction == "more" && newMyYearMore <= idArray[idArrayTaille - 1]){
		document.getElementById('year').innerHTML = newMyYearMore ;
		for (y=0; y<idArrayTaille; y++){
		document.getElementById(idArray[y]).style.display = "none";
		}
		document.getElementById(newMyYearMore).style.display = "block" ;
	};
	if (myAction == "less" && newMyYearLess >= idArray[0]){
		document.getElementById('year').innerHTML = newMyYearLess ;
		for (z=0; z<idArrayTaille; z++){
			document.getElementById(idArray[z]).style.display = "none";
		}
		document.getElementById(newMyYearLess).style.display = "block" ;
	};
};