if (document.images){
     var homeIn= new Image(140,30);
     homeIn.src="/images/btn_home_in.jpg";  

     var homeOut= new Image(140,30);
     homeOut.src="/images/btn_home_out.jpg";
     
     var home2In= new Image(140,30);
     home2In.src="/images/btn_home_in2.jpg";  

     var home2Out= new Image(140,30);
     home2Out.src="/images/btn_home_out2.jpg";     
     
     var eventsIn= new Image(140,30);
     eventsIn.src="/images/btn_events_in.jpg";  

     var eventsOut= new Image(140,30);
     eventsOut.src="/images/btn_events_out.jpg";     
     
     var jobsIn= new Image(140,30);
     jobsIn.src="/images/btn_jobs_in.jpg";  

     var jobsOut= new Image(140,30);
     jobsOut.src="/images/btn_jobs_out.jpg";      
     
     var greenroomIn= new Image(140,30);
     greenroomIn.src="/images/btn_greenroom_in.jpg";  

     var greenroomOut= new Image(140,30);
     greenroomOut.src="/images/btn_greenroom_out.jpg";  
     
     var castIn= new Image(140,30);
     castIn.src="/images/btn_find_cast_in.jpg";  

     var castOut= new Image(140,30);
     castOut.src="/images/btn_find_cast_out.jpg";  
     
     var crewIn= new Image(140,30);
     crewIn.src="/images/btn_find_crew_in.jpg";  

     var crewOut= new Image(140,30);
     crewOut.src="/images/btn_find_crew_out.jpg";        
}

function lightup(imgName){
   if (document.images){
      var imgIn=eval(imgName + "In.src");
      document[imgName].src= imgIn;
    }
}

function turnoff(imgName){
   if (document.images){
      var imgOut=eval(imgName + "Out.src");
      document[imgName].src= imgOut;
    }
}