// JavaScript Document
<!--
browserName = navigator.appName;
browserVer = parseInt ( navigator.appVersion );

version = "n2";
if ( browserName == "Netscape" && browserVer >= 3) version = "n3";
if ( browserName == "Microsoft Internet Explorer" && browserVer >=4) version = "e4";

 	if ( version == "n3" || version == "e4" )
 	{
 			//Top Navigation Bar

 	        a_on = new Image ();
 	        a_on.src = "images/home_on.gif";
 	        a_off = new Image ();
 	        a_off.src = "images/home_off.gif";
			
			b_on = new Image ();
 	        b_on.src = "images/agenda_on.gif";
 	        b_off = new Image ();
 	        b_off.src = "images/agenda_off.gif";
			
			c_on = new Image ();
 	        c_on.src = "images/events_on.gif";
 	        c_off = new Image ();
 	        c_off.src = "images/events_off.gif";
			
			d_on = new Image ();
 	        d_on.src = "images/panels_on.gif";
 	        d_off = new Image ();
 	        d_off.src = "images/panels_off.gif";
			
			e_on = new Image ();
 	        e_on.src = "images/exhibitors_on.gif";
 	        e_off = new Image ();
 	        e_off.src = "images/exhibitors_off.gif";
			
			f_on = new Image ();
 	        f_on.src = "images/parties_on.gif";
 	        f_off = new Image ();
 	        f_off.src = "images/parties_off.gif";
			
	}

 	function button_on ( imgName )
 	{
 	        if ( version == "n3" || version == "e4" )
 	        {
 	                document [imgName].src = eval(imgName + "_on.src");
 			}
 	}

 	function button_off ( imgName )
 	{
 	        if ( version == "n3" || version == "e4" )
 	        {
 	                document [imgName].src = eval(imgName + "_off.src");
 	        }
 	}
	// -->