if (document.images) {
img1 = new Image();
img1.src = "images/link1a.gif";
img2 = new Image();
img2.src = "images/link2a.gif";
img3 = new Image();
img3.src = "images/link3a.gif";
img4 = new Image();
img4.src = "images/link4a.gif";
img5 = new Image();
img5.src = "images/link5a.gif";
img6 = new Image();
img6.src = "images/link6a.gif";
img7 = new Image();
img7.src = "images/twitter_on.gif";
img8 = new Image();
img8.src = "images/facebook_on.gif";
img9 = new Image();
img9.src = "images/frontlink1.jpg";
img11 = new Image();
img11.src = "images/rollover2.jpg";
img12 = new Image();
img12.src = "images/rollover3.jpg";
img13 = new Image();
img13.src = "images/rollover4.jpg";
img14 = new Image();
img14.src = "images/rollover5.jpg";
img15 = new Image();
img15.src = "images/rollover6.jpg";
img16 = new Image();
img16.src = "images/rollover7.jpg";
img17 = new Image();
img17.src = "images/rollover8.jpg";
img18 = new Image();
img18.src = "images/rollover9.jpg";
img19 = new Image();
img19.src = "images/rollover10.jpg";
img20 = new Image();
img20.src = "images/rollover11.jpg";
img21 = new Image();
img21.src = "images/rollover12.jpg";
img22 = new Image();
img22.src = "images/rollover13.jpg";
img23 = new Image();
img23.src = "images/rollover14.jpg";
img24 = new Image();
img24.src = "images/rollover15.jpg";
img25 = new Image();
img25.src = "images/rollover16.jpg";
}

function linkOn(num)
{
document.images['link' + (num)].src = "images/link"+(num)+"a.gif"
}

function linkOff(num)
{
document.images['link' + (num)].src = "images/link"+(num)+".gif"
}

function frontlinkOn(num)
{
document.images['frontlink' + (num)].src = "images/rollover"+(num)+".jpg"
}

function frontlinkOff(num)
{
document.images['frontlink' + (num)].src = "images/rollover"+(num)+".gif"
}