if (document.images) {
	menu_01 = new Image(90, 19);menu_01.src = 'images/nav_home_off.gif';
	menu_01o = new Image(90, 19);menu_01o.src = 'images/nav_home_on.gif';
	menu_02 = new Image(90, 22);menu_02.src = 'images/nav_exhibitions_off.gif';
	menu_02o = new Image(90, 22);menu_02o.src = 'images/nav_exhibitions_on.gif';
	menu_03 = new Image(90, 22);menu_03.src = 'images/nav_artists_off.gif';
	menu_03o = new Image(90, 22);menu_03o.src = 'images/nav_artists_on.gif';
	menu_04 = new Image(90, 22);menu_04.src = 'images/nav_location_off.gif';
	menu_04o = new Image(90, 22);menu_04o.src = 'images/nav_location_on.gif';
	menu_05 = new Image(90, 22);menu_05.src = 'images/nav_publications_off.gif';
	menu_05o = new Image(90, 22);menu_05o.src = 'images/nav_publications_on.gif';
	
	}
	function di(id,name){
	  if (document.images) {document.images[id].src=eval(name+".src"); }
	}
	
	
	
	function dm(msgStr) {
	  document.returnValue = false;
	  if (document.images) { 
	     window.status = msgStr;
	     document.returnValue = true;
	  }
	}
	var showMsg = navigator.userAgent != "Mozilla/4.0 (compatible; MSIE 4.0; Mac_PowerPC)";
	function dmim(msgStr) {
	  document.returnValue = false;
	  if (showMsg) { 
	    window.status = msgStr;
	    document.returnValue = true;
	  }
	}
	
	
	function NewWindow(mypage, myname, w, h, scroll) {
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'
	win = window.open(mypage, myname, winprops)
	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
	}