function resizefonts () {
 	var fMin = document.getElementById("small-font");
	 var fNormal = document.getElementById("normal-font");
	 var fMax = document.getElementById("big-font");
	 var fSize = 1;
 
	 var body = document.getElementsByTagName("body")[0];
	 body.style.fontSize = "1em";
 
	 fNormal.onclick = function (){
		  body.style.fontSize = "1em";
		  return false;
	 }
	 fMin.onclick = function (){
		  fSize = body.style.fontSize.replace("em","");
		  fSize = parseFloat(fSize) - 0.2;
		  if (fSize <= 0.6) fSize = 0.6;  
		  body.style.fontSize = fSize+"em";
		  return false;
	 }
	 fMax.onclick = function (){
		  fSize = body.style.fontSize.replace("em","");
		  fSize = parseFloat(fSize) + 0.2;
		  if (fSize >= 1.4) fSize = 1.4;
		  body.style.fontSize = fSize+"em";
		  return false;
	 }
}


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