// choosing appropriate background for environment
		var netscape4 = navigator.appName == 'Netscape' && parseInt(navigator.appVersion) == 4;
		if (netscape4) {
			document.write('<style type="text/css">');
			document.write('body { background:#6B4721 url(images/bg_lehman.gif) repeat; }');
			document.write('<\/style>');
		} else {
			document.write('<style type="text/css">');
			document.write('body { background:#6B4721 url(images/bg_all_light.gif) repeat-y; background-position:top center; }');
			document.write('<\/style>');
		}
	
		//preloading navigation
		nav_on = new Image();
		nav_on.src = "images/nav_bullet_on.gif";
		nav_off = new Image();
		nav_off.src = "images/nav_bullet_off.gif";
		
		function bulletOn(bullet) {
			if (document.images) {
			document.images[bullet].src = eval("nav_on.src");
			}
		}
		
		function bulletOff(bullet) {
			if (document.images) {
			document.images[bullet].src = eval("nav_off.src");
			}
		}

	function openCalendar() {
		eventsWin = window.open("http://my.calendars.net/lehmancenter","lehman_calendar","status=yes,resizable=yes,scrollbars=yes,width=680,height=580");
		if (eventsWin.opener == null) toolWin.opener = window; 
		eventsWin.opener.name = "lehman_main";
		eventsWin.focus ();
	}

	function openGallery(URL) {
		imageWindow = window.open(URL,"gallery_show","status=no,scrollbars=no,width=690,height=460");
		if (imageWindow.opener == null) imageWindow.opener = window; 
		imageWindow.opener.name = "lehman_main";
		imageWindow.focus ();
	}
	
	function openEvents(URL,wid,hei) {
		imageWindow = window.open(URL,"events_poster","status=no,scrollbars=no,width="+wid+",height="+hei);
		if (imageWindow.opener == null) imageWindow.opener = window; 
		imageWindow.opener.name = "lehman_main";
		imageWindow.focus ();
	}