diff --git a/data/getBlockInfo.php b/data/getBlockInfo.php
index aeb0cdb..c837b30 100644
--- a/data/getBlockInfo.php
+++ b/data/getBlockInfo.php
@@ -24,7 +24,7 @@ $block_hash = blockchain::getLastCacheBlockHash();
 // ---
 // --- Le cas échéant, on cherche block passé en argument
 // ---
-if (isset($_REQUEST['block_hash']))    $block_hash = $_REQUEST['block_hash'];
+if (isset($_REQUEST['block_hash'])) $block_hash = $_REQUEST['block_hash'];
 
 $the_block = blockchain::getBlockWithHash($block_hash);
 if ($the_block === FALSE) die();
diff --git a/index.php b/index.php
index 24fd754..b4428e8 100644
--- a/index.php
+++ b/index.php
@@ -113,7 +113,7 @@
     $('#img_explorer').attr('src', 'images/loading.gif');   
     block_name = $('#blockSelector').val();
     block_url = 'data/getBlockInfo.php';
-    if (block_name != 'LAST') block_url += '?block_hash='+liste_blocks[block_name];
+    if (block_name != 'LAST') block_url += '?block_hash='+getblocHashFromName(block_name);
     $.getJSON(block_url, function( data ) {
       changeExploreBlockDrawing(data);
     });
@@ -139,12 +139,12 @@
 <div class="container-fluid bg-grey" style="padding-top:0px;padding-bottom:10px">
   <div class="row">
   <div class="col-sm-4">
-      <br><img id="img_explorer" src="images/block_image.php" width="100%; height: auto">
+      <br><img id="img_explorer" src="images/loading.gif" width="100%; height: auto">
     </div>
     <div class="col-sm-8">
       <br>
       <h2>Explore the Bitcoin's Blockchain</h2>
-      <h4>This is a drawing of the <select id="blockSelector" onchange="javascript:changeExploreBlock()"><option value="LAST">LAST</option></select> block of the Bitcoin's Blockchain.</h4>
+      <h4>This is a drawing of the <select id="blockSelector" onchange="javascript:changeExploreBlock()"><option selected value="LAST">LAST</option></select> block of the Bitcoin's Blockchain.</h4>
       <a href="explorer.php">Click here to see the other blocks</a>
     </div>
   </div>
diff --git a/js/blockexplorer.js b/js/blockexplorer.js
index 2db7ef4..548d509 100644
--- a/js/blockexplorer.js
+++ b/js/blockexplorer.js
@@ -1,40 +1,86 @@
     // Init array
-    var known_blocks = [
-      'WHALE201810',
-      'BLOCK21E800',   
-      'HURRICANE_1',
-      'SEGWIT',
-      'SEGWIT_LOCK',
-      'BCC',
-      'BIP_91_LOCK',
-      'HALVING_2',
-      'WHALE201311',
-      'HALVING_1',
-      'PIZZA',
-      'TOPISTO',
-      'LEET',
-      'LUCIFER',
-      'THE_ANSWER',
-      'GENESIS' 
+    var liste_blocks = [
+      {
+        name   : 'WHALE201810',
+        hash   : '0000000000000000000f9f2dadfb8f312572183272802cbfcc4ff95b4ee6777d',
+        height : 545911
+      },
+      {
+        name   : 'BLOCK21E800',
+        hash   : '00000000000000000021e800c1e8df51b22c1588e5a624bea17e9faa34b2dc4a',
+        height : 528249
+      },
+      {
+        name   : 'HURRICANE_1',
+        hash   : '0000000000000000000fe6d521a187a5523d5cef6f6c178923ff82ffe5a0f372',
+        height : 506734
+      },
+      {
+        name   : 'SEGWIT',
+        hash   : '000000000000000000cbeff0b533f8e1189cf09dfbebf57a8ebe349362811b80',
+        height : 481823
+      },
+      {
+        name   : 'SEGWIT_LOCK',
+        hash   : '0000000000000000012e6060980c6475a9a8e62a1bf44b76c5d51f707d54522c',
+        height : 479808
+      },
+      {
+        name   : 'BCC',
+        hash   : '00000000000000000019f112ec0a9982926f1258cdcc558dd7c3b7e5dc7fa148',
+        height : 478559
+      },
+      {
+        name   : 'BIP_91_LOCK',
+        hash   : '0000000000000000015411ca4b35f7b48ecab015b14de5627b647e262ba0ec40',
+        height : 477120
+      },
+      {
+        name   : 'HALVING_2',
+        hash   : '000000000000000002cce816c0ab2c5c269cb081896b7dcb34b8422d6b74ffa1',
+        height : 420000
+      },
+      {
+        name   : 'WHALE201311',
+        hash   : '0000000000000001bc7156dd1183c87859b326affa3a5cdd157e809537f0b284',
+        height : 270953
+      },
+      {
+        name   : 'HALVING_1',
+        hash   : '000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e',
+        height : 210000
+      },
+      {
+        name   : 'PIZZA',
+        hash   : '00000000006de085dadb3ec413ef074022fe781121b467e98960280dd246bb00',
+        height : 57035
+      },
+      {
+        name   : 'TOPISTO',
+        hash   : '000000000a73e64735a2b75c97ea674950a9018da1420d01328a918c9ff9852c',
+        height : 5637
+      },
+      {
+        name   : 'LEET',
+        hash   : '000000008bf44a528a09d203203a6a97c165cf53a92ecc27aed0b49b86a19564',
+        height : 1337
+      },
+      {
+        name   : 'LUCIFER',
+        hash   : '00000000fc5b3c76f27f810ee775e480ae7fd604fd196b2d8da4257fcd39f4f9',
+        height : 666
+      },
+      {
+        name   : 'THE_ANSWER',
+        hash   : '00000000314e90489514c787d615cea50003af2023796ccdd085b6bcc1fa28f5',
+        height : 42
+      },
+      {
+        name   : 'GENESIS',
+        hash   : '000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f',
+        height : 0
+      }
     ];
-    var liste_blocks = {
-      'WHALE201810' : '0000000000000000000f9f2dadfb8f312572183272802cbfcc4ff95b4ee6777d',
-      'BLOCK21E800' : '00000000000000000021e800c1e8df51b22c1588e5a624bea17e9faa34b2dc4a',   
-      'HURRICANE_1' : '0000000000000000000fe6d521a187a5523d5cef6f6c178923ff82ffe5a0f372',
-      'SEGWIT'      : '000000000000000000cbeff0b533f8e1189cf09dfbebf57a8ebe349362811b80',
-      'SEGWIT_LOCK' : '0000000000000000012e6060980c6475a9a8e62a1bf44b76c5d51f707d54522c',
-      'BCC'         : '00000000000000000019f112ec0a9982926f1258cdcc558dd7c3b7e5dc7fa148',
-      'BIP_91_LOCK' : '0000000000000000015411ca4b35f7b48ecab015b14de5627b647e262ba0ec40',
-      'HALVING_2'   : '000000000000000002cce816c0ab2c5c269cb081896b7dcb34b8422d6b74ffa1',
-      'WHALE201311' : '0000000000000001bc7156dd1183c87859b326affa3a5cdd157e809537f0b284',
-      'HALVING_1'   : '000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e',
-      'PIZZA'       : '00000000006de085dadb3ec413ef074022fe781121b467e98960280dd246bb00',
-      'TOPISTO'     : '000000000a73e64735a2b75c97ea674950a9018da1420d01328a918c9ff9852c',
-      'LEET'        : '000000008bf44a528a09d203203a6a97c165cf53a92ecc27aed0b49b86a19564',
-      'LUCIFER'     : '00000000fc5b3c76f27f810ee775e480ae7fd604fd196b2d8da4257fcd39f4f9',
-      'THE_ANSWER'  : '00000000314e90489514c787d615cea50003af2023796ccdd085b6bcc1fa28f5',
-      'GENESIS'     : '000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f' 
-    };
   
     var flag_nav    = true;
     var classes     = ['bg-grey-even','bg-grey-odd'];
@@ -50,12 +96,20 @@
 
     function getblockNameFromHash(hash)
     {
-      sHash = String(hash);
-      known_blocks.forEach(function(item){
-        if (sHash == String(liste_blocks[item])) 
-          return item;
+      var retour = '';
+      liste_blocks.forEach(function(item){
+        if (hash == item.hash) retour = item.name;
+      });
+      return retour;
+    }
+
+    function getblocHashFromName(name)
+    {
+      var retour = '';
+      liste_blocks.forEach(function(item){
+        if (name == item.name) retour = item.hash;
       });
-      return '';
+      return retour;
     }
 
     function addInfoForBlock(block)
@@ -241,7 +295,7 @@
       flag_nav   = true;
 
       block_hash = '';
-      if (block_name != 'LAST') block_hash = '?block_hash='+liste_blocks[block_name];
+      if (block_name != 'LAST') block_hash = '?block_hash='+getblocHashFromName(block_name);
       $.getJSON('data/getBlockInfo.php'+block_hash, function( data ) {
         addDivForBlock(data.height);        
         addInfoForBlock(data);
@@ -265,10 +319,11 @@
     {
       // Init the selector
       var select = $('#blockSelector');
-      if (select.length < 2)
+      if (typeof select.isInitSelector == 'undefined')
       {
-        $.each(liste_blocks, function (key, text) {
-          select.append(new Option(key, key));
+        select.isInitSelector = true;
+        $.each(liste_blocks, function (key, bloc) {
+          select.append(new Option(bloc.name, bloc.name));
         });
       }
     }