bulletOn =  new Image();
bulletOn.src = "pic/bullet1.gif";
bulletOff =  new Image();
bulletOff.src = "pic/bullet2.gif";

bullet1On =  new Image();
bullet1On.src = "pic/bullet1.gif";
bullet1Off =  new Image();
bullet1Off.src = "pic/bullet2.gif";

bullet2On =  new Image();
bullet2On.src = "pic/bullet1.gif";
bullet2Off =  new Image();
bullet2Off.src = "pic/bullet2.gif";

bullet3On =  new Image();
bullet3On.src = "pic/bullet1.gif";
bullet3Off =  new Image();
bullet3Off.src = "pic/bullet2.gif";

bullet4On =  new Image();
bullet4On.src = "pic/bullet1.gif";
bullet4Off =  new Image();
bullet4Off.src = "pic/bullet2.gif";

bullet5On =  new Image();
bullet5On.src = "pic/bullet1.gif";
bullet5Off =  new Image();
bullet5Off.src = "pic/bullet2.gif";

bullet6On =  new Image();
bullet6On.src = "pic/bullet1.gif";
bullet6Off =  new Image();
bullet6Off.src = "pic/bullet2.gif";

bullet7On =  new Image();
bullet7On.src = "pic/bullet1.gif";
bullet7Off =  new Image();
bullet7Off.src = "pic/bullet2.gif";

function on(pic)
{
 if(document.images)
  {
    document.images[pic].src=eval(pic + "On.src");
  }
}

function off(pic)
{
 if(document.images)
  {
    document.images[pic].src=eval(pic + "Off.src");
  }
}