var badmintonn = new Image();
badmintonn.src = "blank.gif";
var badmintona = new Image();
badmintona.src = "badminton.gif";
var gymnasticsn = new Image();
gymnasticsn.src = "blank.gif";
var gymnasticsa = new Image();
gymnasticsa.src = "gymnastics.gif";
var tennisn = new Image();
tennisn.src = "blank.gif";
var tennisa = new Image();
tennisa.src = "tennis.gif";
var tabletennisn = new Image();
tabletennisn.src = "blank.gif";
var tabletennisa = new Image();
tabletennisa.src = "table-tennis.gif";
var volleyballn = new Image();
volleyballn.src = "blank.gif";
var volleyballa = new Image();
volleyballa.src = "volleyball.gif";
var basketballn = new Image();
basketballn.src = "blank.gif";
var basketballa = new Image();
basketballa.src = "basketball.gif";
var yogan = new Image();
yogan.src = "blank.gif";
var yogaa = new Image();
yogaa.src = "yoga.gif";
var gymnasiumn = new Image();
gymnasiumn.src = "blank.gif";
var gymnasiuma = new Image();
gymnasiuma.src = "gymnasium.gif";
var squashn = new Image();
squashn.src = "blank.gif";
var squasha = new Image();
squasha.src = "squash.gif";

function act(imgName) {
  if (document.images) 
    document.images[imgName].src = eval(imgName + "a.src");
}

function inact(imgName) {
  if (document.images)
    document.images[imgName].src = eval(imgName + "n.src");
}