function resizefonts () {
	var fMin = document.getElementById("small-font");
	var fMax = document.getElementById("big-font");

	var fSize = 1;
 
	var body = document.getElementsByTagName("body")[0];
	body.style.fontSize = "1em";
	
 
	fMin.onclick = function (){
		fSize = body.style.fontSize.replace("em","");
		fSize = parseFloat(fSize) - 0.1;
		if (fSize <= 0.8) fSize = 0.8;  
		body.style.fontSize = fSize+"em";
		return false;
	}
	fMax.onclick = function (){
		fSize = body.style.fontSize.replace("em","");
		fSize = parseFloat(fSize) + 0.1;
		if (fSize >= 1.2) fSize = 1.2;
		body.style.fontSize = fSize+"em";
		return false;
	}
}

if (window.addEventListener) {
	window.addEventListener("load", resizefonts, false);
}
else if (window.attachEvent) {
	window.attachEvent("onload", resizefonts);
}