function popup_flash()
	 	{
			var hWnd1 = window.open("popup.html","flash1","width=700,height=500,resizable=n,top=50,left=125");
			if (hWnd1.focus != null) hWnd1.focus();
		}

		if((navigator.appName=="Netscape")&&(!(document.getElementById)))
	  	{
	  		document.write("<link rel=\"stylesheet\" href=\"../css/style_nn.css\" type=\"text/css\">");
			document.write("<link rel=\"stylesheet\" href=\"../css/menu.css\" type=\"text/css\">");
	  	}
	  	else
	  	{
	  		document.write("<link rel=\"stylesheet\" href=\"../css/style_ie.css\" type=\"text/css\">");
			document.write("<link rel=\"stylesheet\" href=\"../css/menu.css\" type=\"text/css\">");
	  	}

		var bn=navigator.appName;
		var vn=navigator.appVersion;
		if ((bn=="Microsoft Internet Explorer") && (vn.substring(0,6)=="2.0"))

		function off_img(loc,img) {};
		function on_img(loc,img) {};
		menuimg = new Array(8);
		if ((bn!="Microsoft Internet Explorer") | (vn.substring(0,3)!="2.0"))
	    {
	    menuimg[1]= new Image ();
		menuimg[1].src="../images/nih_staff.gif";
		menuimg[2]= new Image ();
		menuimg[2].src="../images/nih_staff_2.gif";
		menuimg[3]= new Image ();
		menuimg[3].src="../images/site_map.gif";
		menuimg[4]= new Image ();
		menuimg[4].src="../images/site_map_2.gif";
	    }
	    
		function on_img(loc,img)
		{
		  if((bn!="Microsoft Internet Explorer") || (vn.substring(0,3)!="2.0"))
			  loc.src=menuimg[img].src;
		}