var version = 0;
   
        if (navigator.userAgent.indexOf("Mozilla/4.") != -1) version = 4;
        else if (navigator.userAgent.indexOf("Mozilla/3.") != -1) version = 3;
        else if (navigator.userAgent.indexOf("Mozilla/2.") != -1) version = 2;
        else if (navigator.userAgent.indexOf("MSIE") != -1) version = 1;
        else version = 0;
   
        if (version >= 3)
        {
        s_menu1on = new Image();
        s_menu1on.src = "images/nav_home_on.gif";
        s_menu2on = new Image();
        s_menu2on.src = "images/nav_exchange_on.gif";
        s_menu3on = new Image();
        s_menu3on.src = "images/nav_air_on.gif";
        s_menu4on = new Image();
        s_menu4on.src = "images/nav_real_on.gif";
        s_menu5on = new Image();
        s_menu5on.src = "images/nav_multi_on.gif";
        s_menu6on = new Image();
        s_menu6on.src = "images/nav_1031_on.gif";
        s_menu7on = new Image();
        s_menu7on.src = "images/nav_contact_on.gif";
        s_menu8on = new Image();
        s_menu8on.src = "images/classic_butt_on.gif";
        s_menu9on = new Image();
        s_menu9on.src = "images/maximizer_butt_on.gif";
        s_menu10on = new Image();
        s_menu10on.src = "images/portfolio_butt_on.gif";
        s_menu11on = new Image();
        s_menu11on.src = "images/real_casebutt_on.gif";
        s_menu12on = new Image();
        s_menu12on.src = "images/multi_casebutt_on.gif";
        s_menu13on = new Image();
        s_menu13on.src = "images/air_casebutt_on.gif";        
        s_menu14on = new Image();
        s_menu14on.src = "images/download_butt_on.gif";
        s_menu15on = new Image();
        s_menu15on.src = "images/download_main_on.gif";   
        s_menu16on = new Image();
        s_menu16on.src = "images/nav_indiv_home_on.gif"; 
        s_menu17on = new Image();
        s_menu17on.src = "images/nav_indiv_excgproc_on.gif";   
		s_menu18on = new Image();
        s_menu18on.src = "images/nav_indiv_stepbystep_on.gif";   
        s_menu19on = new Image();
        s_menu19on.src = "images/nav_indiv_resources_on.gif";        
        s_menu20on = new Image();
        s_menu20on.src = "images/nav_indiv_contact_on.gif";  
        
        s_menu1off = new Image();
        s_menu1off.src = "images/nav_home_off.gif";
        s_menu2off = new Image();
        s_menu2off.src = "images/nav_exchange_off.gif";
        s_menu3off = new Image();
        s_menu3off.src = "images/nav_air_off.gif";
        s_menu4off = new Image();
        s_menu4off.src = "images/nav_real_off.gif";
        s_menu5off = new Image();
        s_menu5off.src = "images/nav_multi_off.gif";
        s_menu6off = new Image();
        s_menu6off.src = "images/nav_1031_off.gif";
        s_menu7off = new Image();
        s_menu7off.src = "images/nav_contact_off.gif";
        s_menu8off = new Image();
        s_menu8off.src = "images/classic_butt_off.gif";
        s_menu9off = new Image();
        s_menu9off.src = "images/maximizer_butt_off.gif";
        s_menu10off = new Image();
        s_menu10off.src = "images/portfolio_butt_off.gif";
        s_menu11off = new Image();
        s_menu11off.src = "images/real_casebutt.gif";
        s_menu12off = new Image();
        s_menu12off.src = "images/multi_casebutt.gif";   
        s_menu13off = new Image();
        s_menu13off.src = "images/air_casebutt.gif";        
        s_menu14off = new Image();
        s_menu14off.src = "images/download_butt_off.gif";  
        s_menu15off = new Image();
        s_menu15off.src = "images/download_main_off.gif"; 
        s_menu16off = new Image();
        s_menu16off.src = "images/nav_indiv_home_off.gif"; 
        s_menu17off = new Image();
        s_menu17off.src = "images/nav_indiv_excgproc_off.gif";   
		s_menu18off = new Image();
        s_menu18off.src = "images/nav_indiv_stepbystep_off.gif";   
        s_menu19off = new Image();
        s_menu19off.src = "images/nav_indiv_resources_off.gif";        
        s_menu20off = new Image();
        s_menu20off.src = "images/nav_indiv_contact_off.gif";  
   
        
             

       }