function switchSidebars() {
	var linkbar = document.getElementById("linkbar");
	var	widgetbar = document.getElementById("widgetbar");
	var bool = (linkbar.style.display == "none") ? true : false;

	document.getElementById("sb_button").innerHTML = (bool) ? "Sidebar anzeigen" : "Links anzeigen";
	widgetbar.style.display = (bool) ? "none" : "inline";
	linkbar.style.display = (bool) ? "inline" : "none";
}