function toggle(cur_id)

{
//alert(cur_id);	
	if (document.getElementById)
	{
		if (document.getElementById('current').value)
		{
			old_target = document.getElementById(document.getElementById('current').value);
			old_target.style.display = "none";
		}
		
		cur_target = document.getElementById(cur_id);

		if (cur_target.style.display == "none")
		{
			cur_target.style.display = "";
			document.getElementById('current').value = cur_target.id;
		}
		else 
		{
			cur_target.style.display = "none";
			document.getElementById('current').value = 0;
		}
	}
}