var i = 1;
function zoomImage(n){
  w = window.open("/tnview.php?name="+n+"&colour="+document.getElementById('col').value+"&index="+i,"viewer","status=0,toolbar=0,location=0,menubar=0,directories=0,resizable=0,scrollbars=0,height=100,width=100");
  w.focus();
}

function swapImage(swapWith, swapContID, newHomeID,s) {

  var swapContainer = document.getElementById(swapContID);
  var newHome = document.getElementById(newHomeID)

  var URLswapContainer = document.getElementById(swapContID+'url');
  var URLnewHome = document.getElementById(newHomeID+'url')
//  newHome.src = swapContainer.src;

  swapContainer.src = swapWith;
  URLswapContainer.href = URLnewHome.href;
  i = s;
}