function removeVisiblePanel(panel) {
		var i;

		i = visiblePanels.length;
		while (i--) {
			if (visiblePanels[i] === panel) {
				visiblePanels.splice(i, 1);
			}
		}

		i = zOrder.length;
		while (i--) {
			if (zOrder[i] === panel) {
				zOrder.splice(i, 1);
			}
		}
	}
Hide all visible float panels with he autohide setting enabled. This is for
manually hiding floating menus or panels.

@static
@method hideAll