function toggleBox(id,el){
	var element = document.getElementById(id);
	if(element.style.display == 'none'){
		element.style.display = 'block';
		el.style.backgroundImage = "url(/images/down_arrow.png)";
	}else{
		element.style.display = 'none';
		el.style.backgroundImage = "url(/images/arrow.png)";
	}
}