function swap(whichContent) {
  document.getElementById('content').innerHTML = document.getElementById(whichContent).innerHTML;
}
 function swapr(whichContenttwo) {
  document.getElementById('contenttwo').innerHTML = document.getElementById(whichContenttwo).innerHTML;
}
 function swapl(whichContentthree) {
  document.getElementById('contentthree').innerHTML = document.getElementById(whichContentthree).innerHTML;
}
 function swapart(whichContentfour) {
  document.getElementById('contentfour').innerHTML = document.getElementById(whichContentfour).innerHTML;
}
 function swaparttwo(whichContentfive) {
  document.getElementById('contentfive').innerHTML = document.getElementById(whichContentfive).innerHTML;
}
 function swapzoom(whichContentsix) {
  document.getElementById('contentsix').innerHTML = document.getElementById(whichContentsix).innerHTML;
}
 function swapxmas(whichContentseven) {
  document.getElementById('contentseven').innerHTML = document.getElementById(whichContentseven).innerHTML;
}