function setMaxLength(maxLengthArea,idElement) {
	var x = idElement; //document.getElementsByTagName('textarea');
	var counter = document.createElement('div');
	counter.className = 'counter';
	
	var counterClone = counter.cloneNode(true);
	counterClone.relatedElement = x;
	counterClone.innerHTML = '<span>0</span>/'+maxLengthArea;
	x.parentNode.insertBefore(counterClone,x.nextSibling);
	x.relatedElement = counterClone.getElementsByTagName('span')[0];
	checkMaxLength(maxLengthArea,x);
}

/*function setMaxLength() {
	var x = document.getElementsByTagName('textarea');
	var counter = document.createElement('div');
	counter.className = 'counter';
	for (var i=0;i<x.length;i++) {
		if (x[i].getAttribute('maxlength')) {
			var counterClone = counter.cloneNode(true);
			counterClone.relatedElement = x[i];
			counterClone.innerHTML = '<span>0</span>/'+x[i].getAttribute('maxlength');
			x[i].parentNode.insertBefore(counterClone,x[i].nextSibling);
			x[i].relatedElement = counterClone.getElementsByTagName('span')[0];
			x[i].onkeyup = x[i].onchange = checkMaxLength;
			x[i].onkeyup();
		}
	}
}*/

function checkMaxLength(maxLengthArea,_area) {
	//alert('key pressed');
	var maxLength = maxLengthArea;
	var currentLength = _area.value.length;
	if (currentLength > maxLength){
		_area.relatedElement.className = 'troppiCaratteri';
		alert('Attenzione: inseriti troppi caratteri!');
		_area.focus();
		if(currentLength > maxLength ){
			_area.value = _area.value.substring(0,maxLength-1);
		}
	}else{
		_area.relatedElement.className = '';
	}
	_area.relatedElement.firstChild.nodeValue = currentLength;
}


/*
function checkMaxLength() {
	var maxLength = this.getAttribute('maxlength');
	var currentLength = this.value.length;
	if (currentLength > maxLength){
		this.relatedElement.className = 'troppiCaratteri';
		alert('troppi caratteri');
		this.focus();
		if(currentLength > maxLength ){
			this.value = this.value.substring(0,maxLength-1);
		}
	}else{
		this.relatedElement.className = '';
	}
	this.relatedElement.firstChild.nodeValue = currentLength;
}
*/