<!--
if (document.images) {
    homebuttonup       = new Image();
    homebuttonup.src   = "Blue-Home-Tab.gif" ;
    homebuttondown     = new Image() ;
    homebuttondown.src = "White-Home-Tab.gif" ;
    aboutusbuttonup       = new Image();
    aboutusbuttonup.src   = "Blue-AboutUs-Tab.gif" ;
    aboutusbuttondown     = new Image() ;
    aboutusbuttondown.src = "White-AboutUs-Tab.gif" ;
    contactusbuttonup       = new Image();
    contactusbuttonup.src   = "Blue-ContactUs-Tab.gif" ;
    contactusbuttondown     = new Image() ;
    contactusbuttondown.src = "White-ContactUs-Tab.gif" ;
    articlesinfobuttonup       = new Image();
    articlesinfobuttonup.src   = "Blue-ArticlesInfo-Tab.gif" ;
    articlesinfobuttondown     = new Image() ;
    articlesinfobuttondown.src = "White-ArticlesInfo-Tab.gif" ;


}
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" );
    }
}
// -->