gistfile1.txt

<script type="text/javascript">
// Call the function once page is loaded
SP.SOD.executeFunc('sp.js','SP.ClientContext',runWhenLoaded);

//Shared Global Variables
var clientContext;
var oWeb;
var oList;
var obj = [];
var linkLine;

var offset = -1/60 * (new Date().getTimezoneOffset());
console.log(offset);  // This prints to the inspector console, can change to alert if you want

function runWhenLoaded() {
// Create context, get the rootweb, then get the list
        clientContext = SP.ClientContext.get_current();
        oWeb =  clientContext.get_web();
        oList = oWeb.get_lists().getByTitle("Navigation");

        clientContext.load(oList);

        // Execute the queued context commands (passes back to the global vars)
        clientContext.executeQueryAsync(runOnSuccess,function() { alert("Error"); } );
    }

// Callback function for async success
function runOnSuccess() {
        // Get all list items via CAML
        var camlQuery = SP.CamlQuery.createAllItemsQuery();
        var allItems = oList.getItems(camlQuery);
        clientContext.load(allItems, 'Include(Title, NAVControlID, NAVLink, NAVTimeZoneOffset)');

        clientContext.executeQueryAsync(function(){
                var listEnum = allItems.getEnumerator();
                while (listEnum.moveNext()) {
                    var currentItem = listEnum.get_current();
                    obj.push({ page: currentItem.get_item('Title'), navControlID: currentItem.get_item('NAVControlID'), navLink: currentItem.get_item('NAVLink'), navTimeZoneOffset: currentItem.get_item('NAVTimeZoneOffset') });
                }
                concatenateURL(); // call after the list items get called
        }
        ,function() { alert('List get failed'); } );
   }

/* Regina's Code */
function concatenateURL(linkLine) {
  var parsedLinkLine = parseInt(linkLine);
  if (obj[parsedLinkLine].NAVTimeZoneOffset === true) {
   var offsetURL = obj[linkLine].pcxLink.replace("~xx~", offset);
   setAttribute("href", offsetURL);
  }
}
</script>

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