var vbDOMtype = '';
if (document.getElementById)
{
	vbDOMtype = "std";
}
else if (document.all)
{
	vbDOMtype = "ie4";
}
else if (document.layers)
{
	vbDOMtype = "ns4";
}

var vBobjects = new Array();

function fetch_object(idname, forcefetch)
{
	if (forcefetch || typeof(vBobjects[idname]) == "undefined")
	{
		switch (vbDOMtype)
		{
			case "std":
			{
				vBobjects[idname] = document.getElementById(idname);
			}
			break;

			case "ie4":
			{
				vBobjects[idname] = document.all[idname];
			}
			break;

			case "ns4":
			{
				vBobjects[idname] = document.layers[idname];
			}
			break;
		}
	}
	return vBobjects[idname];
}




	function nav_goto(targeturl)
	{
		parent.frames.main.location = targeturl;
	}

	function open_close_group(group, doOpen)
	{
		var curdiv = fetch_object("group_" + group);
		var curbtn = fetch_object("button_" + group);

		if (doOpen)
		{
			curdiv.style.display = "";
			curbtn.src = "/img/cp_collapse.gif";
			curbtn.title = "";
		}
		else
		{
			curdiv.style.display = "none";
		curbtn.src = "/img/cp_expand.gif";
			curbtn.title = "";
		}

	}

	function toggle_group(group)
	{
		var curdiv = fetch_object("group_" + group);

		if (curdiv.style.display == "none")
		{
			open_close_group(group, true);
		}
		else
		{
			open_close_group(group, false);
		}
	}