var active_hidden_text = "";
function show_hidden_obj(obj){
	if(document.getElementById(obj).style.display == 'block'){
		document.getElementById(obj).style.display = 'none';
	}
	else{
		document.getElementById(obj).style.display = 'block';
	}
	
	if(active_hidden_text != "" && active_hidden_text != obj){
		document.getElementById(active_hidden_text).style. display = 'none';
	}
	active_hidden_text = obj;
}