function toggle_vis(id){
	var img = document.getElementById('img_'+id);
	var cnt = document.getElementById('cnt_'+id);
	if(cnt.style.display=='none'){
		cnt.style.display='block';
		img.src = "/modules/hidden_content_toggler/templates/img/hide.png";
		img.setAttribute('alt','Hide Content');
		img.setAttribute('title','Hide Content');
	}else{
		cnt.style.display='none';	
		img.src = "/modules/hidden_content_toggler/templates/img/show.png";
		img.setAttribute('alt','Show Content');
		img.setAttribute('title','Show Content');	
	}
}