/*Q&A折りたたみ用*/

function setUp(){
	var answerElmnts = getByClass(document,"answer","div");
	for(i=0; i<answerElmnts.length; i++){
	answerElmnts[i].style.display = "none";
	}
}
function answerOpen(obj){
	var answerElmnts = getByClass(obj.parentNode,"answer","div");
	if(answerElmnts[0].style.display == "none")	{
		answerElmnts[0].style.display = "block";
	}else{
		answerElmnts[0].style.display = "none";
	}
}
function getByClass(parentElmnt,className,tagName){
	var cElmnts = new Array();
	var elmnts = parentElmnt.getElementsByTagName(tagName);
	for(i = 0; i < elmnts.length; i++){
	if(elmnts[i].className == className){
		cElmnts.push(elmnts[i]);
		}
	}
	return cElmnts;
}