aMbtnOn  = new Array();
aMbtnOff = new Array();
aIcon    = new Array();
for(i=1;i<=7;i++) {
  aMbtnOn['_b'+i]=new Image(); aMbtnOn['_b'+i].src='img/btn0'+i+'on.gif';
  aMbtnOff['_b'+i]=new Image(); aMbtnOff['_b'+i].src='img/btn0'+i+'.gif';
  aIcon['_b'+i]=new Image(); aIcon['_b'+i].src='img/icn0'+i+'.gif';
}

function hlite(btn,b) {
  if (b) {
    document.images[btn].src = aMbtnOn[btn].src;
  if (btn != '_b7')
    document.images['icon'].src = aIcon[btn].src;
  } else {
    document.images[btn].src = aMbtnOff[btn].src;
    document.images['icon'].src = 'img/icn'+icon+'.gif';
  }
}