<!--
if (document.images) {
    homebutton1up       = new Image();
    homebutton1up.src   = "/images/tech.gif" ;
    homebutton1down     = new Image() ;
    homebutton1down.src   = "/images/tech_o.gif" ;
    homebutton2up       = new Image();
    homebutton2up.src   = "/images/educate.gif" ;
    homebutton2down     = new Image() ;
    homebutton2down.src   = "/images/educate_o.gif" ;
    homebutton3up       = new Image();
    homebutton3up.src   = "/images/evidence.gif" ;
    homebutton3down     = new Image() ;
    homebutton3down.src   = "/images/evidence_o.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" );
    }
}
// -->