function switchNext1(el,tname,first) {
	var abscn="abs";
	var selcn="selected";
	var next=el.nextSibling;
	var tags=el.parentNode.getElementsByTagName(tname);
	while(next.nodeType != 1) next = next.nextSibling;
	next.style.display=((next.style.display=="none") ? "block" : "none");
	var rE = new RegExp("(^|\\s)" +abscn + "(\\s|$)");
	if (rE.test(next.className)==false) {next.className+=" "+abscn;}
	if (first!=1){
		for (i=0; i<tags.length; i++) {
			var tohide=tags[i].nextSibling;
			while(tohide.nodeType != 1) tohide = tohide.nextSibling;
			if (tohide!=next){tohide.style.display="none";}
			tags[i].className=tags[i].className.replace(new RegExp(selcn+"\\b"), "");
			if (tags[i]==el){
				next.style.display="block";
				var rEx = new RegExp("(^|\\s)" + selcn + "(\\s|$)");
				if (rEx.test(tags[i].className)==false) {tags[i].className+=" "+selcn;}
			}
		}	
	}
	else {
		var firstone=tags[0].nextSibling;
		while(firstone.nodeType != 1) firstone = firstone.nextSibling;
		firstone.style.display="block";
		var rEx = new RegExp("(^|\\s)" + selcn + "(\\s|$)");
		if (rEx.test(tags[0].className)==false) {tags[0].className+=" "+selcn;}
	}
}

function switchNextByIdAndTag1(el,tname) {
	var ccn="clicker";
	clickers=document.getElementById(el).getElementsByTagName(tname);
	for (i=0; i<clickers.length; i++) {
		clickers[i].className+=" "+ccn;
		clickers[i].onclick=function() {switchNext1(this,tname)}
		switchNext1(clickers[i],tname,1);
	}
}

window.onload=function(){switchNextByIdAndTag1('dlist','dt')}