function change(form) {
if (form.url.selectedIndex != 0) 
parent.location = form.url.options[form.url.selectedIndex].value
} 

// Definitions

// size of AdCorner image
// You should change this when you change the image.
var     nAdCornerWidth          = 75;
var     nAdCornerHeight         = 130;

// right and bottom margin
var nAdCornerMarginX = 2;
var nAdCornerMarginY = 2;

// window's scrollbar width and height
var nScrollBarWidth = 16;
var nScrollBarHeight = 16;

// navigator check
var isMSIE = 0;
var nVersion = 3;

// refresh interval of AdCorner
var nInterval = 200;

var isLoaded = 0;

function setup ()
{
// Detect Navigator
nVersion = parseInt (navigator.appVersion); // chang
if (navigator.appName == "Microsoft Internet Explorer")
{
isMSIE = 1;
if (navigator.userAgent.indexOf ("MSIE 5") != -1)
{
nVersion = 5;
}
}
else
{
isMSIE = 0;
if (nVersion >= 4)
{
window.captureEvents (Event.MOUSEMOVE);
}
}

if (nVersion >= 4)
{
window.setInterval ("AdCornerMove();", nInterval);
}
}

function AdCornerMove ()
{
if (isLoaded == 0)
{
return;
}
if (isMSIE)
{
nAdCornerOriginX = document.body.clientWidth - idAdCorner.width - nAdCornerMarginX;
nAdCornerOriginY = document.body.clientHeight - idAdCorner.height - nAdCornerMarginY;

nAdCornerOriginX += document.body.scrollLeft;
nAdCornerOriginY += document.body.scrollTop;

idAdCorner.style.pixelLeft = nAdCornerOriginX;
idAdCorner.style.pixelTop = nAdCornerOriginY;
}
else
{
nAdCornerOriginX = window.innerWidth + window.pageXOffset - nAdCornerWidth - nAdCornerMarginX;
nAdCornerOriginY = window.innerHeight + window.pageYOffset - nAdCornerHeight - nAdCornerMarginY;

if (window.scrollbars.visible == true)
{
nAdCornerOriginX -= nScrollBarWidth;
nAdCornerOriginY -= nScrollBarHeight;
}

document.layers["idAdCorner"].pageX = nAdCornerOriginX;
document.layers["idAdCorner"].pageY = nAdCornerOriginY;
}
}