var $old = function(id) { 
	return document.getElementById(id); 
}
var redirect = function(url) {
	window.location.href = url;
}
var confirm_action = function(text, url) {
	if (confirm(text)) {
		window.location.href = url;
	}
}
var dSwitch = function(id) {
	div = document.getElementById(id);
	if (div.style.display == 'none') { 
		div.style.display = ''; 
	} else { 
		div.style.display = 'none'; 
	}
}
var aSwitch = function(sender, id) {
	div = $old(id);
	if (div.style.display == 'none') { 
		div.style.display = '';
		sender.style.backgroundImage = 'url(images/bg_title.gif)';
	} else { 
		div.style.display = 'none';
		sender.style.backgroundImage = 'url(images/bg_title_grey.gif)';
	}
}