var map = null;
var mm = null;
var gmarkers = [];
var gmarkerIDs = [];
var markersInView = [];
var geocoder = null;
var optionsXML = null;
function pageFwd() {
  document.getElementById('curPage').innerHTML = parseInt(document.getElementById('curPage').innerHTML)+1;
  var curPage = document.getElementById('sb_page').value;
  var sbPageSize = document.getElementById('sb_page_size').value;
  var sbPH;
  for (var i=0; i<sbPageSize; i++) {
    sbPH = i+parseInt(curPage)*parseInt(sbPageSize);
    sbPHnext = i+(parseInt(curPage)+1)*parseInt(sbPageSize);
    document.getElementById('sidebox'+sbPH).style.display = 'none';
    document.getElementById('sidebox_spacer'+sbPH).style.display = 'none';

    if (document.getElementById('sidebox'+sbPHnext)) {
      document.getElementById('sidebox'+sbPHnext).style.display = 'block';
      document.getElementById('sidebox_spacer'+sbPHnext).style.display = 'inline';
    }
  }
  document.getElementById('sb_page').value = parseInt(curPage)+1;
  document.getElementById('prevLink').style.display = 'inline';
  if (parseInt(document.getElementById('curPage').innerHTML) == parseInt(document.getElementById('totPages').innerHTML))
    document.getElementById('nextLink').style.display = 'none';
    
}
function pageBwd() {
  document.getElementById('curPage').innerHTML = parseInt(document.getElementById('curPage').innerHTML)-1;
  var curPage = document.getElementById('sb_page').value;
  var sbPageSize = document.getElementById('sb_page_size').value;
  var sbPH;
  for (var i=0; i<sbPageSize; i++) {
   sbPH = i+curPage*sbPageSize;
   sbPHprev = i+(curPage-1)*sbPageSize;
   if (document.getElementById('sidebox'+sbPH)) document.getElementById('sidebox'+sbPH).style.display = 'none';
   if (document.getElementById('sidebox_spacer'+sbPH)) document.getElementById('sidebox_spacer'+sbPH).style.display = 'none';
   if (document.getElementById('sidebox'+sbPHprev)) document.getElementById('sidebox'+sbPHprev).style.display = 'block';
   if (document.getElementById('sidebox_spacer'+sbPHprev)) document.getElementById('sidebox_spacer'+sbPHprev).style.display = 'inline';
  }
  document.getElementById('sb_page').value = curPage-1;
  if (curPage==1) document.getElementById('prevLink').style.display = 'none';
  document.getElementById('nextLink').style.display = 'inline';
}
function loadSidebar() {
  markersInView = [];
  var mapBounds = map.getBounds();
  var thisPoint = new GPoint(0, 0);
  var inView;
  for (var i = 0; i < gmarkers.length; i++) {
    thisPoint = gmarkers[i].getPoint();
    inView = mapBounds.containsLatLng(thisPoint);
    if (inView) markersInView.push(gmarkerIDs[i]);
  }
  var idsLookup='';
  for (i = 0; i < markersInView.length; i++) {
    idsLookup += markersInView[i];
    if (i<markersInView.length-1) idsLookup += ',';
  }
  ajaxLookupIds(idsLookup);
}
function loadMap(latitude, longitude, zoomFactor) {
  if (GBrowserIsCompatible()) {
    map = new GMap2(document.getElementById("map"));
    map.setCenter(new GLatLng(latitude, longitude), zoomFactor);
    map.addControl(new GLargeMapControl());
    map.addControl(new GMapTypeControl());
    map.addControl(new GScaleControl()) ;
    map.addControl(new GOverviewMapControl()) ;
//  map.addControl(new GMapTypeControl());
    geocoder = new GClientGeocoder();
    map.enableDoubleClickZoom();
    //map.setCenter(new GLatLng(0, 0), 0);
    //DLS 080424
    mm = new GMarkerManager(map);
    GEvent.addListener(map, "moveend", function() {
      loadSidebar();
    });
  }
}
function loadMapSmall(latitude, longitude, zoomFactor) {
        if (GBrowserIsCompatible()) {
            map = new GMap2(document.getElementById("map-small"));
                map.addControl(new GSmallMapControl());
//              map.addControl(new GMapTypeControl());
                geocoder = new GClientGeocoder();
                map.setCenter(new GLatLng(latitude, longitude), zoomFactor);
        }
}
function centerMap(address) {
   if (geocoder) {
        geocoder.getLatLng (address,
        function(point) {
        if (!point) {
                alert(address + " not found");
                        } else {
                        map.setCenter(point, 9);
//                              map.setMapType(G_HYBRID_MAP); 
                        }
                }
        );
   }
}
function newMarkerOld (title, latitude, longitude, telephone, displayAddress, lastMarker) {
        if (geocoder) {
                var GPoint =  new GLatLng (latitude, longitude);
                var marker = new GMarker(GPoint);
//              var markerHTML = '<h2>' + title + '</h2>\n';
//              markerHTML += '<p><strong>Address:</strong><br />\n' + displayAddress + '</p>\n';
//              markerHTML += '<p><strong>Tel:  </strong>' + telephone + '</p>\n';
//              GEvent.addListener(marker, "click", function() {
//                      marker.openInfoWindowHtml(markerHTML);
//              });
                map.addOverlay(marker);
        }
        return true;
}
//function newMarker (title, latitude, longitude, telephone, displayAddress, lastMarker, zoomFlag) {
function newMarker (title, latitude, longitude, displayInfo, ID, lastMarker, zoomFlag) {
        var point = new GPoint (parseFloat (longitude), parseFloat (latitude));
        var ppoint =  new GLatLng (latitude, longitude);
        bounds.extend(ppoint);
        var marker = new GMarker(point);
        var markerHTML = "<h3>" + title + "</h3>\n" + displayInfo;
        //markerHTML += '<p><strong>Address:</strong><br />\n' + displayAddress + '</p>\n';
        //markerHTML += '<p><strong>Tel:  </strong>' + telephone + '</p>\n';
        if (!zoomFlag) {
        GEvent.addListener(marker, "click", function() {
                marker.openInfoWindowHtml(markerHTML);
        });
        }
        //map.addOverlay(marker);
       // - to add one at a time: mm.addMarker(marker,0,17);
        gmarkers.push(marker);
        gmarkerIDs.push(ID);
        if (zoomFlag) {
                marker.openInfoWindowHtml(markerHTML);
        }
}
function newMarkerNoText (latitude, longitude) {
        var point = new GPoint (parseFloat (longitude), parseFloat (latitude));
        var marker = new GMarker(point);
        map.addOverlay(marker);
}
/*
function centerPoint (title, latitude, longitude, telephone, displayAddress, lastMarker) {
        var GPoint =  new GLatLng (latitude, longitude);
        map.setCenter(GPoint, 15);
        map.clearOverlays();
        newMarker (title, latitude, longitude, telephone, displayAddress, lastMarker, true);
}
*/
function ajaxLookupIds(IDs) {
  tPara = "ids="+IDs+"&order="+document.getElementById('sbOrd').value;
  if (window.XMLHttpRequest) {
    req = new XMLHttpRequest();
  } else if (window.ActiveXObject) {
    req = new ActiveXObject("Microsoft.XMLHTTP");
  }
  req.open("POST", 'sidelistings.php', false);
  req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  req.setRequestHeader("Content-length", tPara.length);
  req.setRequestHeader("Connection", "close");
  req.send(tPara);
  document.getElementById('sidelistings').innerHTML = req.responseText;


  //alert(IDs);
}