var selEl = "";

	function toggleOff(elname) {
		if (elname != selEl) {
			var el = document.getElementById(elname);
			el.className = "button";
		}
	}

	function toggleOn(elname) {
		if (elname != selEl) {
			var el = document.getElementById(elname);
			el.className = "button_over";
		}
	}

	function goloc(where) {
		location.href=where;
	}

	function centerPopup(url) {
		var pW = 1024;
		var pH = 768;
		var w = screen.width;
		var h = screen.height;

		var l = (w-pW)/2;
		var t = (h-pH)/2;
		t=t-20;

		var parameters = "";
		parameters += "width="+pW+",";
		parameters += "height="+pH+",";
		parameters += "top="+t+",";
		parameters += "left="+l+",";
		parameters += "resizable=1,scrollbars=1";
		window.open(url,'popupLT',parameters);
		return false;
	}