//Active Images for rollover images
  button_aboutus = new Image();
  button_aboutus.src = "images/button_aboutus.gif";
  button_aboutus.on = new Image();
  button_aboutus.on.src = "images/button_aboutus.on.gif";
 
  button_noveldrug = new Image();
  button_noveldrug.src = "images/button_noveldrug.gif";
  button_noveldrug.on = new Image();
  button_noveldrug.on.src = "images/button_noveldrug.on.gif";
 
  button_products = new Image();
  button_products.src = "images/button_products.gif";
  button_products.on = new Image();
  button_products.on.src = "images/button_products.on.gif";
 
  button_newsevents = new Image();
  button_newsevents.src = "images/button_newsevents.gif";
  button_newsevents.on = new Image();
  button_newsevents.on.src = "images/button_newsevents.on.gif";
 
  button_employment = new Image();
  button_employment.src = "images/button_employment.gif";
  button_employment.on = new Image();
  button_employment.on.src = "images/button_employment.on.gif";
 
  button_contact = new Image();
  button_contact.src = "images/button_contact.gif";
  button_contact.on = new Image();
  button_contact.on.src = "images/button_contact.on.gif";
 
  subnav_inthenews = new Image();
  subnav_inthenews.src = "images/subnav_inthenews.gif";
  subnav_inthenews.on = new Image();
  subnav_inthenews.on.src = "images/subnav_inthenews.on.gif";
 
  subnav_eventscalendar = new Image();
  subnav_eventscalendar.src = "images/subnav_eventscalendar.gif";
  subnav_eventscalendar.on = new Image();
  subnav_eventscalendar.on.src = "images/subnav_eventscalendar.on.gif";
 
  subnav_newsreleases = new Image();
  subnav_newsreleases.src = "images/subnav_newsreleases.gif";
  subnav_newsreleases.on = new Image();
  subnav_newsreleases.on.src = "images/subnav_newsreleases.on.gif";
 
  subnav_pressroom = new Image();
  subnav_pressroom.src = "images/subnav_pressroom.gif";
  subnav_pressroom.on = new Image();
  subnav_pressroom.on.src = "images/subnav_pressroom.on.gif";
 
  subnav_news = new Image();
  subnav_news.src = "images/subnav_news.gif";
  subnav_news.on = new Image();
  subnav_news.on.src = "images/subnav_news.on.gif";
 
  subnav_companyoverview = new Image();
  subnav_companyoverview.src = "images/subnav_companyoverview.gif";
  subnav_companyoverview.on = new Image();
  subnav_companyoverview.on.src = "images/subnav_companyoverview.on.gif";
 
  subnav_investors = new Image();
  subnav_investors.src = "images/subnav_investors.gif";
  subnav_investors.on = new Image();
  subnav_investors.on.src = "images/subnav_investors.on.gif";
 
  subnav_executiveteam = new Image();
  subnav_executiveteam.src = "images/subnav_executiveteam.gif";
  subnav_executiveteam.on = new Image();
  subnav_executiveteam.on.src = "images/subnav_executiveteam.on.gif";
 
  subnav_board = new Image();
  subnav_board.src = "images/subnav_board.gif";
  subnav_board.on = new Image();
  subnav_board.on.src = "images/subnav_board.on.gif";
 
  subnav_scientificadvisor = new Image();
  subnav_scientificadvisor.src = "images/subnav_scientificadvisor.gif";
  subnav_scientificadvisor.on = new Image();
  subnav_scientificadvisor.on.src = "images/subnav_scientificadvisor.on.gif";
 
  subnav_scientificconsult = new Image();
  subnav_scientificconsult.src = "images/subnav_scientificconsult.gif";
  subnav_scientificconsult.on = new Image();
  subnav_scientificconsult.on.src = "images/subnav_scientificconsult.on.gif";
 
  subnav_partnerships = new Image();
  subnav_partnerships.src = "images/subnav_partnerships.gif";
  subnav_partnerships.on = new Image();
  subnav_partnerships.on.src = "images/subnav_partnerships.on.gif";
 
  subnav_introduction = new Image();
  subnav_introduction.src = "images/subnav_introduction.gif";
  subnav_introduction.on = new Image();
  subnav_introduction.on.src = "images/subnav_introduction.on.gif";
 
  subnav_microbiology = new Image();
  subnav_microbiology.src = "images/subnav_microbiology.gif";
  subnav_microbiology.on = new Image();
  subnav_microbiology.on.src = "images/subnav_microbiology.on.gif";
 
  subnav_chemistry = new Image();
  subnav_chemistry.src = "images/subnav_chemistry.gif";
  subnav_chemistry.on = new Image();
  subnav_chemistry.on.src = "images/subnav_chemistry.on.gif";
 
  subnav_screening = new Image();
  subnav_screening.src = "images/subnav_screening.gif";
  subnav_screening.on = new Image();
  subnav_screening.on.src = "images/subnav_screening.on.gif";
 
  subnav_overview = new Image();
  subnav_overview.src = "images/subnav_overview.gif";
  subnav_overview.on = new Image();
  subnav_overview.on.src = "images/subnav_overview.on.gif";
 
  subnav_immunology = new Image();
  subnav_immunology.src = "images/subnav_immunology.gif";
  subnav_immunology.on = new Image();
  subnav_immunology.on.src = "images/subnav_immunology.on.gif";
 
  subnav_oncology = new Image();
  subnav_oncology.src = "images/subnav_oncology.gif";
  subnav_oncology.on = new Image();
  subnav_oncology.on.src = "images/subnav_oncology.on.gif";
 
  subnav_publications = new Image();
  subnav_publications.src = "images/subnav_publications.gif";
  subnav_publications.on = new Image();
  subnav_publications.on.src = "images/subnav_publications.on.gif";
 
  subnav_employment = new Image();
  subnav_employment.src = "images/subnav_employment.gif";
  subnav_employment.on = new Image();
  subnav_employment.on.src = "images/subnav_employment.on.gif";
 
  subnav_benefits = new Image();
  subnav_benefits.src = "images/subnav_benefits.gif";
  subnav_benefits.on = new Image();
  subnav_benefits.on.src = "images/subnav_benefits.on.gif";
 
  subnav_career = new Image();
  subnav_career.src = "images/subnav_career.gif";
  subnav_career.on = new Image();
  subnav_career.on.src = "images/subnav_career.on.gif";
 
  subnav_resumes = new Image();
  subnav_resumes.src = "images/subnav_resumes.gif";
  subnav_resumes.on = new Image();
  subnav_resumes.on.src = "images/subnav_resumes.on.gif";
 
  subnav_contactus = new Image();
  subnav_contactus.src = "images/subnav_contactus.gif";
  subnav_contactus.on = new Image();
  subnav_contactus.on.src = "images/subnav_contactus.on.gif";
 
  subnav_directions = new Image();
  subnav_directions.src = "images/subnav_directions.gif";
  subnav_directions.on = new Image();
  subnav_directions.on.src = "images/subnav_directions.on.gif";

  subnav_caboard = new Image();
  subnav_caboard.src = "images/subnav_caboard.gif";
  subnav_caboard.on = new Image();
  subnav_caboard.on.src = "images/subnav_caboard.on.gif"; 

  subnav_npi0052 = new Image();
  subnav_npi0052.src = "images/subnav_npi0052.gif";
  subnav_npi0052.on = new Image();
  subnav_npi0052.on.src = "images/subnav_npi0052.on.gif";
  
  subnav_npi2358 = new Image();
  subnav_npi2358.src = "images/subnav_npi2358.gif";
  subnav_npi2358.on = new Image();
  subnav_npi2358.on.src = "images/subnav_npi2358.on.gif";

       
//Code for image rollovers for IE4+
function changeImages() {
	if (document.images) {
    	for (var i=0; i<changeImages.arguments.length; i+=3) {
    	document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    	}
	} 
}

function button_swap(imagename,objectsrc) {
	document.images[imagename].src=eval(objectsrc+".src")
}