<!--
    if (document.images) {
            basicson = new Image();      
            basicson.src = "images/nav/basics-on.gif"; 
            faqson = new Image();      
            faqson.src = "images/nav/faqs-on.gif"; 
            eventson = new Image();      
            eventson.src = "images/nav/events-on.gif"; 
            vcon = new Image();      
            vcon.src = "images/nav/vc-on.gif"; 
            pgon = new Image();      
            pgon.src = "images/nav/pg-on.gif"; 
            agon = new Image();      
            agon.src = "images/nav/ag-on.gif"; 
            msdson = new Image();      
            msdson.src = "images/nav/msds-on.gif"; 
            tdson = new Image();      
            tdson.src = "images/nav/tds-on.gif"; 

            basicsoff = new Image();      
            basicsoff.src = "images/nav/basics-off.gif"; 
            faqsoff = new Image();      
            faqsoff.src = "images/nav/faqs-off.gif"; 
            eventsoff = new Image();      
            eventsoff.src = "images/nav/events-off.gif"; 
            vcoff = new Image();      
            vcoff.src = "images/nav/vc-off.gif"; 
            pgoff = new Image();      
            pgoff.src = "images/nav/pg-off.gif"; 
            agoff = new Image();      
            agoff.src = "images/nav/ag-off.gif"; 
            msdsoff = new Image();      
            msdsoff.src = "images/nav/msds-off.gif"; 
            tdsoff = new Image();      
            tdsoff.src = "images/nav/tds-off.gif"; 
          }
//-->