function bigSize()
{
	var i = 0;
	var increment = 1;
	var max = 13;
	var min = 11;
	var elements = $$("#centre_contingut p,#centre_contingut ul li,#centre_contingut a,#centre_contingut span,#galeria p,#centre_contingut label,#centre_contingut_dinamic p,#centre_contingut_dinamic ul li,#centre_contingut_dinamic a,#centre_contingut_dinamic span,#galeria p,#centre_contingut_dinamic label");
	for(i=0;i<elements.length;i++)
	{
		var actual_size = parseInt(elements[i].style.fontSize);
		if(isNaN(actual_size)){actual_size = 11;}
		if(actual_size < max)
			{
			var new_size = actual_size + increment;
			elements[i].style.fontSize = new_size+"px";
			}
	}					
}
function smallSize()
{
	var i = 0;
	var increment = 1;
	var max = 13;
	var min = 11;
	var elements = $$("#centre_contingut p,#centre_contingut ul li,#centre_contingut a,#centre_contingut span,#galeria p,#centre_contingut label,#centre_contingut_dinamic p,#centre_contingut_dinamic ul li,#centre_contingut_dinamic a,#centre_contingut_dinamic span,#galeria p,#centre_contingut_dinamic label");
	for(i=0;i<elements.length;i++)
	{
		var actual_size = parseInt(elements[i].style.fontSize);
		if(isNaN(actual_size)){actual_size = 11;}
		if(actual_size > min)
			{
			var new_size = actual_size - increment;
			elements[i].style.fontSize = new_size+"px";
			}
	}		
}