var mode="";
function setMode(value){
  mode = value; 
}

function createEditLink(century){
  var link="";
  var modelink="";
  if(mode!=''){
    modelink = "&mode=" + mode;
  }
  link=century + modelink;
  top.window.location.href = link;
}

function createMillenniumEditLink(millennium){
  var link="";
  var modelink="";
  if(mode!=''){
    modelink = "?" + mode;
  }
  link=millennium+ modelink;
  top.window.location.href = link;
}