var maxScale = 150;
var minScale = 90;
var currentScale = 100;

function scaleUp() {
	if ( currentScale < maxScale ) {
		// Increase our scale by 10%
		currentScale += 10;
		
		updateScales();
		setCookie('fontScale', currentScale, 365);
	}
}

function scaleDown() {
	if ( currentScale > minScale ) {
		// Increase our scale by 10%
		currentScale -= 10;
		
		updateScales();
		setCookie('fontScale', currentScale, 365);
	}
}

function updateScales() {
	var contentRule = new Array();
	contentRule = getCSSRule('#content');
	
	if ( contentRule ) {
		contentRule.style.fontSize = currentScale + "%";
	}
}