function toggle_expand_item(element_id)
{
	if (document.getElementById(element_id)) 
	{
		var element = document.getElementById(element_id);

		if (element.style.display == "block") 
		{
			element.style.display = "none";
		}
		else 
		{
			element.style.display = "block";
		}
	}
}