var img1on,img1off
var img2on,img2off
var img3on,img3off
var img4on,img4off
var img5on,img5off
var img6on,img6off

img1off=new Image;
img1off.src="../images/indexENG_18.gif";
img1on=new Image;
img1on.src="../images/indexENG_18_1.gif";

img2off=new Image;
img2off.src="../images/indexENG_19.gif";
img2on=new Image;
img2on.src="../images/indexENG_19_1.gif";

img3off=new Image;
img3off.src="../images/indexENG_20.gif";
img3on=new Image;
img3on.src="../images/indexENG_20_1.gif";

img4off=new Image;
img4off.src="../images/indexENG_21.gif";
img4on=new Image;
img4on.src="../images/indexENG_21_1.gif";

img5off=new Image;
img5off.src="../images/indexENG_22.gif";
img5on=new Image;
img5on.src="../images/indexENG_22_1.gif";

img6off=new Image;
img6off.src="../images/indexENG_27.gif";
img6on=new Image;
img6on.src="../images/indexENG_27_1.gif";

function on(obj)
{
  var imgon
  imgon=eval(obj.name+"on.src");
  obj.src=imgon;
}
function off(obj)
{
  var imgoff
  imgoff=eval(obj.name+"off.src");
  obj.src=imgoff;
}