function setMaxLength()
{
	var x = document.getElementsByTagName('textarea');
	var counter = document.createElement('span');
	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 = 'Used <var>0</var> of '+x[i].getAttribute('maxlength')+' allowed characters.';
			x[i].parentNode.insertBefore(counterClone,x[i].nextSibling);
			x[i].relatedElement = counterClone.getElementsByTagName('var')[0];

			x[i].onkeyup = x[i].onchange = checkMaxLength;
			x[i].onkeyup();
		}
	}
}

function clearMaxLength()
{
	
}

function checkMaxLength()
{
	var maxLength = this.getAttribute('maxlength');
	var currentLength = this.value.length;
	if (currentLength > maxLength) {
		this.value = this.value.substring(0, maxLength);
	} else {
		this.relatedElement.className = '';
	}
	this.relatedElement.firstChild.nodeValue = currentLength;
	// not innerHTML
}