button_1_on  = new Image();  button_1_on.src  = 'images/menu/button_1_on.gif';
	button_1_off = new Image();  button_1_off.src = 'images/menu/button_1_off.gif';
	button_2_on  = new Image();  button_2_on.src  = 'images/menu/button_2_on.gif';
	button_2_off = new Image();  button_2_off.src = 'images/menu/button_2_off.gif';
	button_3_on  = new Image();  button_3_on.src  = 'images/menu/button_3_on.gif';
	button_3_off = new Image();  button_3_off.src = 'images/menu/button_3_off.gif';
	button_4_on  = new Image();  button_4_on.src  = 'images/menu/button_4_on.gif';
	button_4_off = new Image();  button_4_off.src = 'images/menu/button_4_off.gif';
	button_5_on  = new Image();  button_5_on.src  = 'images/menu/button_5_on.gif';
	button_5_off = new Image();  button_5_off.src = 'images/menu/button_5_off.gif';
	button_6_on  = new Image();  button_6_on.src  = 'images/menu/button_6_on.gif';
	button_6_off = new Image();  button_6_off.src = 'images/menu/button_6_off.gif';
	button_7_on  = new Image();  button_7_on.src  = 'images/menu/button_7_on.gif';
	button_7_off = new Image();  button_7_off.src = 'images/menu/button_7_off.gif';

	function img_on(musswitch) {
		switchnavn = eval(musswitch + "_on");
      document [musswitch].src = switchnavn.src;
  	}

	function img_off(musswitch) {
		switchnavn = eval(musswitch + "_off");
		document [musswitch].src = switchnavn.src;
	}

	function col_in(link){
		link.bgColor="silver";
	}

	function col_out(link){
		link.bgColor="gray";
	}		
	

function popup(url, width, height) {
        var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',resizable=0,scrollbars=yes,menubar=no' );
}