function initPage () {
	var fMin = document.getElementById("decrease");
	var fMax = document.getElementById("increase");
	var fSize = 62.5;
	
	var body = document.getElementsByTagName("body")[0];
	body.style.fontSize = "62.5%";
	fMin.onclick = function (){
		fSize = body.style.fontSize.replace("%","");
		fSize = parseInt(fSize) - 9.5;
		if (fSize <= 30) fSize = 30;  
		body.style.fontSize = fSize+"%";
		return false;
	}
	fMax.onclick = function (){
		fSize = body.style.fontSize.replace("%","");
		fSize = parseInt(fSize) + 9.5;
		if (fSize >= 140) fSize = 140; 
		body.style.fontSize = fSize+"%";
		return false;
	}
}

if (window.addEventListener)
	window.addEventListener("load", initPage, false);
else if (window.attachEvent)
	window.attachEvent("onload", initPage);