function enlargeText(el)
{
	var enlarge		= ( el.innerHTML == 'Enlarge text' ? true : false );
	el.innerHTML	= ( enlarge === true ? 'Minimize text' : 'Enlarge text' );
	var arr_changeable	= getElementsByClassName('changeable');
	for(var i=0; i<arr_changeable.length; i++)
	{
		var curSize	= parseInt(getStyle(arr_changeable[i],'font-size'));
		var newSize	= ( enlarge === true ? curSize + 2 : curSize - 2 );
		arr_changeable[i].style.fontSize	= newSize + 'px';

		var curSize	= parseInt(getStyle(arr_changeable[i],'line-height'));
		curSize		= ( curSize == 'auto' || isNaN(curSize) ? 13 : curSize );
		var newSize	= ( enlarge === true ? curSize + 4 : curSize - 4 );
		arr_changeable[i].style.lineHeight	= newSize + 'px';
	}
}