var className = 'resizeme';
var pixelArray =  new Array('9','10','11','12','13','14','16','18','20','22');
var initSize = 5;

function fontSizer(inc) {
	var size = initSize;
	size += inc;
	if (size < 0 ) { size = 0; }
	if (size > 9 ) { size = 9; }
	initSize = size;

	$('.'+className).css('font-size',pixelArray[size]+'px');
}