function collapse_all(){

	var answers = YAHOO.util.Dom.getElementsByClassName("answer");	
	for(var i = 0; i < answers.length; i++){
		answers[i].style.height = 0;
	}
}

function expand(el_id){
	element = document.getElementById(el_id);
	
	var attributes = { height: { to: element.scrollHeight} };

	var anim = new YAHOO.util.Anim(element, attributes, 0.4, YAHOO.util.Easing.easeOut);
	anim.animate();
}

function collapse(el_id){
	element = document.getElementById(el_id);
	
	var attributes = { height: { to: 0} };

	var anim = new YAHOO.util.Anim(element, attributes, 0.4, YAHOO.util.Easing.easeOut);
	anim.animate();
}

function toggle_question(el_id){
	
	
	var element = document.getElementById(el_id);

	if(element.style.height != '0pt' && element.style.height != '0px'){
		collapse(el_id);
	}
	else{
		expand(el_id);
	}
}

YAHOO.util.Event.onDOMReady(collapse_all);