var currentDivName = "General";


function changeDivision(newDivName) {

  var oldVisDiv = document.getElementById(currentDivName);
  var newVisDiv = document.getElementById(newDivName);

  oldVisDiv.style.visibility = "hidden";
  newVisDiv.style.visibility = "visible";

  currentDivName = newDivName;

}

function setMainDiv(divName) {
 
  currentDivName = divName;
  var oldVisDiv = document.getElementById(currentDivName);
  oldVisDiv.style.visibility = "visible";
}