var imgover = new Image();
imgover.src = "imgover.gif";

var indexoff = new Image();
indexoff.src = "indexoff.gif";

var historyoff = new Image();
historyoff.src = "historyoff.gif";

var responseoff = new Image();
responseoff.src = "responseoff.gif";

var chantsoff = new Image();
chantsoff.src = "chantsoff.gif";

var gameoff = new Image();
gameoff.src = "gameoff.gif";

var picturesoff = new Image();
picturesoff.src = "picturesoff.gif";

var newsoff = new Image();
newsoff.src = "newsoff.gif";

var interviewsoff = new Image();
interviewsoff.src = "interviewsoff.gif";

var hairoff = new Image();
hairoff.src = "hairoff.gif";

var kitoff = new Image();
kitoff.src = "kitoff.gif";

var jboff = new Image();
jboff.src = "jboff.gif";

var lifeoff = new Image();
lifeoff.src = "lifeoff.gif";

var shopoff = new Image();
shopoff.src = "shopoff.gif";

var pgtipsoff = new Image();
pgtipsoff.src = "pgtipsoff.gif";

var cartoonsoff = new Image();
cartoonsoff.src = "cartoonsoff.gif";

var catoff = new Image();
catoff.src = "catoff.gif";

var cluboff = new Image();
cluboff.src = "cluboff.gif";

var worlddoff = new Image();
worlddoff.src = "worlddoff.gif";

var gbookoff = new Image();
gbookoff.src = "gbookoff.gif";

var contactusoff = new Image();
contactusoff.src = "contactusoff.gif";

function imgon(imgName)
{
  document[imgName].src = eval("imgover.src");
}

function imgoff(imgName)
{
  document[imgName].src = eval(imgName + "off.src");
}