if (document.images) {
   loginbuttonup       = new Image();
   loginbuttonup.src   = "images/button-login.jpg" ;
   loginbuttondown     = new Image() ;
   loginbuttondown.src = "images/button-login-over.jpg" ;
   
   logoutbuttonup       = new Image();
   logoutbuttonup.src   = "images/button-logout.jpg" ;
   logoutbuttondown     = new Image() ;
   logoutbuttondown.src = "images/button-logout-over.jpg" ;

    resourcesbuttonup       = new Image();
    resourcesbuttonup.src   = "images/button-resources.jpg" ;
    resourcesbuttondown     = new Image() ;
    resourcesbuttondown.src = "images/button-resources-over.jpg" ;
	
	quotesbuttonup       = new Image();
    quotesbuttonup.src   = "images/button-quotes.jpg" ;
    quotesbuttondown     = new Image() ;
    quotesbuttondown.src = "images/button-quotes-over.jpg" ;
	
	enewsletterbuttonup       = new Image();
    enewsletterbuttonup.src   = "images/button-enewsletter.jpg" ;
    enewsletterbuttondown     = new Image() ;
    enewsletterbuttondown.src = "images/button-enewsletter-over.jpg" ;
	
	emailbuttonup       = new Image();
    emailbuttonup.src   = "images/button-email.jpg" ;
    emailbuttondown     = new Image() ;
    emailbuttondown.src = "images/button-email-over.jpg" ;
	
	calendarbuttonup       = new Image();
    calendarbuttonup.src   = "images/button-calendar.jpg" ;
    calendarbuttondown     = new Image() ;
    calendarbuttondown.src = "images/button-calendar-over.jpg" ;
	
	downloadbuttonup       = new Image();
    downloadbuttonup.src   = "images/button-download.jpg" ;
    downloadbuttondown     = new Image() ;
    downloadbuttondown.src = "images/button-download-over.jpg" ;
	
	faqbuttonup       = new Image();
    faqbuttonup.src   = "images/button-faq.jpg" ;
    faqbuttondown     = new Image() ;
    faqbuttondown.src = "images/button-faq-over.jpg" ;
	
	calculatorbuttonup       = new Image();
    calculatorbuttonup.src   = "images/button-calculator.jpg" ;
    calculatorbuttondown     = new Image() ;
    calculatorbuttondown.src = "images/button-calculator-over.jpg" ;
		
	newbuttonup       = new Image();
    newbuttonup.src   = "images/button-new.jpg" ;
    newbuttondown     = new Image() ;
    newbuttondown.src = "images/button-new-over.jpg" ;
	
	requestbuttonup       = new Image();
    requestbuttonup.src   = "images/button-quote-request.jpg" ;
    requestbuttondown     = new Image() ;
    requestbuttondown.src = "images/button-quote-request-over.jpg" ;
	
	questionbuttonup       = new Image();
    questionbuttonup.src   = "images/button-question.jpg" ;
    questionbuttondown     = new Image() ;
    questionbuttondown.src = "images/button-question-over.jpg" ;
	
}
function buttondown( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "down.src" );
    }
}
function buttonup ( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "up.src" );
    }
}