// Global variable used to number panes.
var pane_num = 0;

function dropDown(section)
{
	// Shows a drop-down menu.

	var activeItem = 0;

	activeItem = document.getElementById(section);

	activeItem.style.visibility = 'visible';

	// Safari puts embedded content on top of all else.
	// This hides the Flash pictures to leave the menus accessible.
	if (navigator.userAgent.lastIndexOf("Safari") > -1 && 
	navigator.userAgent.lastIndexOf("Chrome") == -1)
	{
		topPics = document.getElementById('flashbar');
		topPics.style.visibility = 'hidden';
	}
}

function hideDropDown(section)
{
	// Hides a drop-down menu.

	var activeItem = 0;

	activeItem = document.getElementById(section);

	activeItem.style.visibility = 'hidden';

	// Shows the Flash pictures again in Safari.
	if (navigator.userAgent.lastIndexOf("Safari") > -1 && 
	navigator.userAgent.lastIndexOf("Chrome") == -1)
	{
		topPics = document.getElementById('flashbar');
		topPics.style.visibility = 'visible';
	}
}