function toggleNext(el) {
	var next=el.nextSibling;
	while(next.nodeType != 1) next=next.nextSibling;
	next.style.display=((next.style.display=="none") ? "block" : "none");
}


function toggleNextById(el) {
	var ccn="clicker";
	var clicker=document.getElementById(el);
	clicker.className+=" "+ccn;
	clicker.onclick=function() {toggleNext(this)}
	toggleNext(clicker);
}


function toggleNextByTagName(tname) {
	var ccn="clicker";
	var clickers=document.getElementsByTagName(tname);
	for (i=0; i<clickers.length; i++) {
		clickers[i].className+=" "+ccn;
		clickers[i].onclick=function() {toggleNext(this)}
		toggleNext(clickers[i]);
	}
}


window.onload=function(){
	toggleNextByTagName('h3');
}