function init_zoom(){
	var zPlus = document.getElementById("zoom-plus");
	zPlus.onclick=function(){return zoomFont(5)}
	var zMinus = document.getElementById("zoom-minus");
	zMinus.onclick=function(){return zoomFont(-5)}
	var zReset = document.getElementById("zoom-reset");
	zReset.onclick=function(){return zoomFont(0)}
}
function zoomFont(size){
	body = document.getElementsByTagName("body")[0];
	cookies=document.cookie.split("\n");
	zoomLevel = 0;
	for(i=0;i<cookies.length;i++){
		cookies[i]=cookies[i].split("=");
		if(cookies[i][0]=="zoom"){
			zoomLevel = parseInt(cookies[i][1]);
			zoomLevel += size;
			if(size==0 || zoomLevel<0){
				zoomLevel=0;
			}
			cookies[i][1] = zoomLevel;
			
		}
	}
	cookieText = "";
	var now = new Date();
	var expires = new Date (now.getTime () + 60 * 60 *24 * 30);
	for(i=0;i<cookies.length;i++){
		cookieText = cookieText + cookies[i][0] +"="+cookies[i][1] +';expires=' + expires.toGMTString () +"\n";
	}
	document.cookie = cookieText;
	if (zoomLevel >=0){
		body.style.fontSize=(62.5+zoomLevel)+"%";
	}
	return false;
}