var theText = "Newsletter";
//var theText = "őoooooooo";

function nextSize(i,incMethod,textLength) {
	if (incMethod == 1) return (10*Math.abs( Math.sin(i/(textLength/3.14))) );  // 36: betüméret
	if (incMethod == 2) return (255*Math.abs( Math.cos(i/(textLength/3.14))));
}

function sizeCycle(text,method,dis) {
	output = "";
	for (i = 0; i < text.length; i++) {
		size = parseInt(nextSize(i +dis,method,text.length))+10;
		output += "<font style='font-size: "+ size +"pt'>" +text.substring(i,i+1)+ "</font>";
	}
	theDiv = document.getElementById('theDiv');
	theDiv.innerHTML = output;
}

function doWave(n) { 
	sizeCycle(theText,1,n);
	if (n > theText.length) {n=0}
	setTimeout("doWave(" + (n+1) + ")", 150);  // sebesség
}