function fontSize(object, size)
{
	this.m_size = size;
	this.m_object = object;
	object.style.fontSize = size+"px";
}

fontSize.prototype.increase = function()
{
	var size = this.m_object.style.fontSize;
	size = size.replace(/px/, "");
	if (size == 14)
		return;
	size = size*1 + 1;
	size = size+"px";
	this.m_object.style.fontSize = size;
}

fontSize.prototype.decrease = function()
{
	var size = this.m_object.style.fontSize;
	size = size.replace(/px/, "");
	if (size == 12)
		return;
	size = size*1 - 1;
	size = size+"px";
	this.m_object.style.fontSize = size;
}