var bannerCount = 4

if (document.images)
 {
		//* define image urls and href *//
		var pics= new Array(bannerCount) 
		var href= new Array(bannerCount) 
		 
		// Images
		pics[1]="http://impgb.tradedoubler.com/imp/img/43308/1018311";
		pics[2]="http://impgb.tradedoubler.com/imp/img/43307/1018311";
		pics[3]="http://impgb.tradedoubler.com/imp/img/154743/1018311";
		pics[4]="http://impgb.tradedoubler.com/imp/img/15784887/1018311";
		
		// Links
		href[1]="http://clkuk.tradedoubler.com/click?p=1156&a=1018311&g=43308" target="_blank";
		href[2]="http://clkuk.tradedoubler.com/click?p=1156&a=1018311&g=43307" target="_blank";
		href[3]="http://clkuk.tradedoubler.com/click?p=15658&a=1018311&g=154743" target="_blank";
		href[4]="http://clkuk.tradedoubler.com/click?p=12592&a=1018311&g=15784887" target="_blank";




 }  

function get_random(maxNum)
{
  if (Math.random && Math.round)
  {
    var ranNum= Math.round(Math.random()*(maxNum-1));
    ranNum+=1;
    return ranNum;
  }
  else
  {
  today= new Date();
  hours= today.getHours();
  mins= today.getMinutes();
  secn= today.getSeconds();
  if (hours==19)
   hours=18;
  var ranNum= (((hours+1)*(mins+1)*secn)%maxNum)+1;


  return ranNum;
  }
}

function chooseImage(){

	if (document.images){

		var choose_one = get_random(bannerCount);  
		var rndNum = choose_one
	
		document.getElementById("banner").src = pics[rndNum]
		document.getElementById("bannerLink").href = href[rndNum]
	}
}