// JavaScript Document
var showSeconds = 4000; // number of seconds to show partner img
// list of partners, images, and links
//var partners = [["IBM", "/images/partners/partner_ibm.gif", "http://www.ibm.com"],
//				["AMEX", "/images/partners/partner_amex.gif", "http://www.americanexpress.com"],
//				["Lexus","/images/partners/partner_lexus.gif","http://www.lexus.com"],
//				["Rolex","/images/partners/partner_rolex.gif","http://www.rolex.com"]];
//				["RBS", "/images/partners/partner_rbs.gif", "http://www.rbs.com"],
//				["ESPN", "/images/partners/partner_espn.gif", "http://www.espn.com"],
//var partners = [["AMEX", "/images/partners/partner_amex.gif", "http://www.americanexpress.com"],
//				["IBM", "/images/partners/partner_ibm.gif", "http://www.ibm.com"],
//				["Lexus","/images/partners/partner_lexus.gif","http://www.lexus.com"],
//				["RBS", "/images/partners/partner_rbs.gif", "http://www.rbs.com"],
//				["Rolex","/images/partners/partner_rolex.gif","http://www.rolex.com"]];
var partners = [["AMEX", "/images/partners/partner_amex.gif", "http://ad.doubleclick.net/clk;215147429;37129732;i"],
["IBM", "/images/partners/partner_ibm.gif", "http://www.ibm.com"],
["Lexus","/images/partners/partner_lexus.gif","http://www.lexus.com"],
["RBS", "/images/partners/partner_rbs.gif", "http://www.rbs.com"],
["Rolex","/images/partners/partner_rolex.gif","http://www.rolex.com"]];
var pLoad = true;
var pRotate = "";
var prev_partner = 0;
function startRotation() {
// Start timer to rotate images
rotatePartnerAd();
pRotate = setInterval(rotatePartnerAd,4000);
}
function rotatePartnerAd() {
var pNum;
var link = document.getElementById("partnerLink"); // get the link
var img = document.getElementById("partnerImg"); // get the image
if(pLoad){
pNum = Math.floor(Math.random() * partners.length); // select a random partner
pLoad = false; 
} else {
pNum = prev_partner + 1; // select next partner
}
if (pNum >= partners.length) {
pNum = 0;
}
prev_partner = pNum;
// check if link and image exists before trying to change
if(link != null && img != null) {
img.src = partners[pNum][1]; // change the partner image
link.href = "javascript:openExternal('" + partners[pNum][2] + "',true)"; // change the partner link
} else {
clearInterval(pRotate); // if the link and image are null, cancel the timer
}
}