if (document.images) {
companyup=new Image();
companyup.src="images/nav/about_us.gif";
companydown=new Image();
companydown.src="images/nav/about_us_over.gif";
companyclick=new Image();
companyclick.src="images/nav/about_us_on.gif";
}

if (document.images) {
portfolio2up=new Image();
portfolio2up.src="images/nav/portfolio.gif";
portfolio2down=new Image();
portfolio2down.src="images/nav/portfolio_over.gif";
portfolio2click=new Image();
portfolio2click.src="images/nav/portfolio_on.gif";
}

if (document.images) {
customersup=new Image();
customersup.src="images/nav/customers.gif";
customersdown=new Image();
customersdown.src="images/nav/customers_over.gif";
customersclick=new Image();
customersclick.src="images/nav/customers_on.gif";
}

if (document.images) {
contactup=new Image();
contactup.src="images/nav/contact.gif";
contactdown=new Image();
contactdown.src="images/nav/contact_over.gif";
contactclick=new Image();
contactclick.src="images/nav/contact_on.gif";
}

if (document.images) {
servicesup=new Image();
servicesup.src="images/nav/services.gif";
servicesdown=new Image();
servicesdown.src="images/nav/services_over.gif";
servicesclick=new Image();
servicesclick.src="images/nav/services_on.gif";
}