function Point(){
 var x, y;
}
function exportMapImage(regionid){
    map1.showLoading();
    var params = "mapExport=mapExport&formId=" + map1.formId + "&mapId=" + map1.id;
    params +="&" + EsriUtils.buildRequestParams(map1.formId);
    if (tabSelected == 2)
        params += "&custom=custom";
    var xh = EsriUtils.sendAjaxRequest(EsriUtils.getServerUrl(map1.formId), params, false, 
            function () {displayMapImage(xh);} ); 
                                                   
}



function displayMapImage(xh){
 if (xh != null && xh.readyState == 4 && xh.status == 200) {
        var xml = EsriUtils.getXmlDocument(xh);
     
        var errorTags = xml.getElementsByTagName(errorTag);

         map1.hideLoading();
        if (errorTags.length > 0){
            alert(errorTags.item(0).firstChild.nodeValue);
            return;
        }
        
          var mapName = xml.getElementsByTagName("mapImage").item(0).firstChild.nodeValue;
        if (mapName){
              var div = document.getElementById('mapDownload');
               removeNodeContent(div);
            table = div.appendChild(document.createElement("table"));
            table.style.width = "100%";
            tbody = table.appendChild(document.createElement("tbody"));
            tr = tbody.insertRow(-1);
            td = tr.insertCell(-1);
            var a = td.appendChild(document.createElement("a"));
            var downloadImg = a.appendChild(document.createElement("img"));
            downloadImg.src = "/gis/images/download.gif";
            a.appendChild(document.createTextNode("  Download this image"));
            a.href="/FileDownloadServlet?attachment=attachment&filename="+mapName;
            
            td2 = tr.insertCell(-1)
            var div2 = td2.appendChild(document.createElement("span"));
            div2.innerHTML="<a href='javascript:toggleWindowHTML(\"mapDownload\");' style='float:right'><img src='/gis/images/close.gif' alt='close'></a>";
            td2.style.styleFloat = "right";
         
           
            var img  = div.appendChild(document.createElement("img"));
            img.src  = "/FileDownloadServlet?filename="+mapName;
            img.alt ="Map Image for downloading";
            img.title ="Map Image for downloading";
           
            
            div.style.display = "";
//            placeOnCenter("mapDownload");
            
        }
    }
 }
 
 
 function IntegerFormatter(num){
    var len = num.length;
    var tri_len = len/3;
    var tri_len_res = len%3;
    var result = "";
    for (i =0; i < tri_len; i++){
        if (i == 0){
            result = num.substring(0, tri_len_res);
        }
        else{
            result += ",";
            result += num.substring(tri_len_res + (i-1)*3, 3);
        }
            
    }
    
    return;
 }
 //http://www.koders.com/javascript/fidD885FBA9851752CB9597A50817A13E1E81E4B011.aspx?s=window
 
 // Functions to convert between lat,lon and utm. Derived from visual basic
// routines from Craig Perault. This assumes a NAD83 datum.

// constants
var MajorAxis = 6378137.0;
var MinorAxis = 6356752.3;
var Ecc = (MajorAxis * MajorAxis - MinorAxis * MinorAxis) / (MajorAxis * MajorAxis);
var Ecc2 = Ecc / (1.0 - Ecc);
//var K0 = 0.9996;
var K0 = 0.9992;
var E4 = Ecc * Ecc;
var E6 = Ecc * E4;
var degrees2radians = Math.PI / 180.0;

// Computes the meridian distance for the GRS-80 Spheroid.
// See equation 3-22, USGS Professional Paper 1395.
function meridianDist(lat) {
  var c1 = MajorAxis * (1 - Ecc / 4 - 3 * E4 / 64 - 5 * E6 / 256);
  var c2 = -MajorAxis * (3 * Ecc / 8 + 3 * E4 / 32 + 45 * E6 / 1024);
  var c3 = MajorAxis * (15 * E4 / 256 + 45 * E6 / 1024);
  var c4 = -MajorAxis * 35 * E6 / 3072;

  return(c1 * lat + c2 * Math.sin(lat * 2) + c3 * Math.sin(lat * 4) + c4 * Math.sin(lat * 6));
}

// Convert lat/lon (given in decimal degrees) to UTM, given a particular UTM zone.
function geographicToUTM(zone, latlon) {
  var utm = new Point();

  var centeralMeridian = -((30 - zone) * 6 + 3) * degrees2radians;

  var lat = latlon.y * degrees2radians;
  var lon = latlon.x * degrees2radians;

  var latSin = Math.sin(lat);
  var latCos = Math.cos(lat);
  var latTan = latSin / latCos;
  var latTan2 = latTan * latTan;
  var latTan4 = latTan2 * latTan2;

  var N = MajorAxis / Math.sqrt(1 - Ecc * (latSin*latSin));
  var c = Ecc2 * latCos*latCos;
  var a = latCos * (lon - centeralMeridian);
  var m = meridianDist(lat);

  var temp5 = 1.0 - latTan2 + c;
  var temp6 = 5.0 - 18.0 * latTan2 + latTan4 + 72.0 * c - 58.0 * Ecc2;
  var temp11 = Math.pow(a, 5);

  utm.x = K0 * N * (a + (temp5 * Math.pow(a, 3)) / 6.0 + temp6 * temp11 / 120.0) + 500000;

  var temp7 = (5.0 - latTan2 + 9.0 * c + 4.0 * (c*c)) * Math.pow(a,4) / 24.0;
  var temp8 = 61.0 - 58.0 * latTan2 + latTan4 + 600.0 * c - 330.0 * Ecc2;
  var temp9 = temp11 * a / 720.0;

  utm.y = K0 * (m + N * latTan * ((a * a) / 2.0 + temp7 + temp8 * temp9))

  return(utm);
}

function CSq(value) {
  return value*value;
}

// Convert UTM coordinates (given in meters) to Lat/Lon (in decimal degrees), given a particular UTM zone.
function UTMToGeographic(zone, utm) {
  var latlon = new Point();

//  var centeralMeridian = -((30 - zone) * 6 + 3) * degrees2radians;
  var centeralMeridian  = -115*degrees2radians;
  var temp1 = Math.sqrt(1.0 - Ecc);
  var ecc1 = (1.0 - temp1) / (1.0 + temp1);
  var ecc12 = ecc1 * ecc1;
  var ecc13 = ecc1 * ecc12;
  var ecc14 = ecc12 * ecc12;

  utm.x = utm.x - 500000.0;

  var m = utm.y / K0;
  var um = m / (MajorAxis * (1.0 - (Ecc / 4.0) - 3.0 * (E4 / 64.0) - 5.0 * (E6 / 256.0)));

  var temp8 = (1.5 * ecc1) - (27.0 / 32.0) * ecc13;
  var temp9 = ((21.0 / 16.0) * ecc12) - ((55.0 / 32.0) * ecc14);

  var latrad1 = um + temp8 * Math.sin(2 * um) + temp9 * Math.sin(4 * um) + (151.0 * ecc13 / 96.0) * Math.sin(6.0 * um);

  var latsin1 = Math.sin(latrad1);
  var latcos1 = Math.cos(latrad1);
  var lattan1 = latsin1 / latcos1;
  var n1 = MajorAxis / Math.sqrt(1.0 - Ecc * CSq(latsin1));
  var t2 = CSq(lattan1);
  var c1 = Ecc2 * CSq(latcos1);

  var temp20 = (1.0 - Ecc * CSq(latsin1));
  var r1 = MajorAxis * (1.0 - Ecc) / Math.sqrt(CSq(temp20) * temp20);

  var d1 = utm.x / (n1*K0);
  var d2 = CSq(d1);
  var d3 = d1 * d2;
  var d4 = CSq(d2);
  var d5 = d1 * d4;
  var d6 = CSq(d3);

  var t12 = CSq(t2);
  var c12 = CSq(c1);

  temp1 = n1 * lattan1 / r1;
  temp2 = 5.0 + 3.0 * t2 + 10.0 * c1 - 4.0 * c12 - 9.0 * Ecc2;
  temp4 = 61.0 + 90.0 * t2 + 298.0 * c1 + 45.0 * t12 - 252.0 * Ecc2 - 3.0 * c12;
  temp5 = (1.0 + 2.0 * t2 + c1) * d3 / 6.0;
  temp6 = 5.0 - 2.0 * c1 + 28.0 * t2 - 3.0 * c12 + 8.0 * Ecc2 + 24.0 * t12;

  latlon.y = (latrad1 - temp1 * (d2 / 2.0 - temp2 * (d4 / 24.0) + temp4 * d6 / 720.0)) * 180 / Math.PI;
  latlon.x = (centeralMeridian + (d1 - temp5 + temp6 * d5 / 120.0) / latcos1) * 180 / Math.PI;
  utm.x = utm.x + 500000.0;

  return(latlon);
}



function toggleWindow(id) {
  if(taskWindowManager && taskWindowManager.windows[id])
    taskWindowManager.windows[id].toggleVisibility();
}


  function toggleOverView(img){
                toggleWindowHTML('overview'); 
                if (img.src.indexOf("/gis/images/hide.gif")!= -1) 
                    img.src = '/gis/images/show.gif'; 
                else 
                    img.src = '/gis/images/hide.gif';
                }
                
function refreshMap(map){
 map.showLoading();
        var mapSourceNames = map.mapSourceNames;
        if (! map.isFuseGraphics) {
          for (var i=0;i<mapSourceNames.length;i++)
            map.updateWebGraphics();
        }
        map.hideLoading();
}

function redrawMap(map){
    map.resize(map.width, map.height);
}

function testExpire(xh){
    var text  = xh.responseText;
   
    if (text){
        if (text.indexOf("<title>Login - Alberta Biodiversity Monitoring Institute</title>") != -1 
            || text.indexOf("j_security_check") != -1){
             var refresh = alert("You session has expired! please refersh the page!");
           
             map1.hideLoading();
            return true;
            }
    }
    
    return false;
}

function iconDisplay(imgObj, imageName){
    // first clear all previous highlighted images 
    var icons =new Array( new Array("Identify1" , "info.gif"), 
    new Array("Identify2", "info.gif" ),
    new Array("button_SpatialSelectionTask_tool_searchByPoint", "pointSelect.gif"),
                            
                  new Array      ("button_SpatialSelectionTask_tool_searchByRectangle" ,
                       "rectangleSelect.gif" ),
                       new Array("button_SpatialSelectionTask_tool_searchByPolygon" ,
                        "polygonSelect.gif" ));
                        
                        
     
     for (i=0; i < icons.length; i++){
        objName = icons[i][0];
        imgName = icons[i][1];
        
        objDiv = document.getElementById(objName);
        objDiv.src = "/gis/images/" + imgName;
     }
     
     imgObj.src = imageName;
}