storage.js

var saveSplit1 = '<^>', saveSplit2 = '<*>', saveY;
function storageCheck() {
  if (localStorage) {
    if (localStorage.length) {
      //something is stored
      var dataToLoad = storageLoad('AllowSave');
      if (dataToLoad == 1) {
        //user has said YES to saving.
        saveY = 1;
      } else if (dataToLoad == 0) {
        //user has said NO to saving.
        saveY = -1;
      } else {
        //either there is nothing saved yet, or something is amiss!
        saveY = 0;
      }
    } else {
      saveY = 0;
    }
  } else {
    upNotOpen('localStorage appears to be unavailable in this browser. Unable to save anything.','');
    saveY = -1;
  }
}
function storageChoose(zChoice) {
  if (zChoice == 'Y') {
    var a = saveY[0]
      , b = saveY[1];
    saveY = 1;
    storageSave('AllowSave', saveY);
    storageSave(a, b);
  } else {
    //disable saving for this session.
    saveY = -1;
  }
  //later on if it is called for by anyone, I can add a 'never' save that disables saving, except for saving the preference to never save :D
  upNotClose();
}
function storageLoad(toLoad) {
  var dataToLoad = '';
  try {
    dataToLoad = localStorage.getItem(toLoad);
  } catch (ex) {}
  return dataToLoad;
}
function storageSave(toSave, dataToSave) {
  //ONLY save if if is 1
  if (saveY == 1) {
    localStorage.setItem(toSave, dataToSave);
  }//check wether this is the first time the user has saved something:
  else if (saveY == 0) {
    //nothing stored
    //check if the user has already got a notifyer yet:
    if (!document.getElementById('storY')) {
      //temporerily store the data in this variable.
      saveY = [toSave, dataToSave];
      upNotOpen('Remember preferences?<button id="storY" class="uButtons uButtonGreen" type="button " style="font-size:1.5em;width:30%;margin:.1em .2em;float:left;">Yes</button>' + '<button id="storN" class="uButtons uButtonRed" type="button" style="font-size:1.5em;width:30%;margin:.1em .2em;float:right;">No</button>','');
    }
  }
  //else stor is -1 and that means the user has opted to not save anything. 
}