Added ENC maps displayscreenshot

+ fixed previews dimensions

gallery.html

@@ -57,13 +57,13 @@
             <p>GPXSee on Windows 10</p>
           </li><li>
             <a href="gallery/mac.png">
-              <img src="gallery/mac_prev.png" width="200" height="261" alt=""/>
+              <img src="gallery/mac_prev.png" width="200" height="253" alt=""/>
             </a>
             <h3>Mac OS&nbsp;X</h3>
             <p>GPXSee on OS&nbsp;X</p>
           </li><li>
             <a href="gallery/linux.png">
-              <img src="gallery/linux_prev.png" width="200" height="275" alt=""/>
+              <img src="gallery/linux_prev.png" width="200" height="272" alt=""/>
             </a>
             <h3>Linux</h3>
             <p>GPXSee on Linux</p>
@@ -73,12 +73,6 @@
             </a>
             <h3>Multiple tracks</h3>
             <p>GPXSee with multiple tracks loaded</p>
-          </li><li>
-            <a href="gallery/multi2.png">
-              <img src="gallery/multi2_prev.png" width="200" height="258" alt=""/>
-            </a>
-            <h3>Multiple tracks</h3>
-            <p>GPXSee with multiple tracks loaded</p>
           </li><li>
             <a href="gallery/poi.png">
               <img src="gallery/poi_prev.png" width="200" height="258" alt=""/>
@@ -99,7 +93,7 @@
             <p>Shimano Di2 gear ratio/shifts graph</p>
           </li><li>
             <a href="gallery/greatcircle.png">
-              <img src="gallery/greatcircle_prev.png" width="200" height="279" alt=""/>
+              <img src="gallery/greatcircle_prev.png" width="200" height="253" alt=""/>
             </a>
             <h3>Great circle paths</h3>
             <p>GPXSee showing flight routes as great circle paths</p>
@@ -127,6 +121,12 @@
             </a>
             <h3>Garmin IMG maps</h3>
             <p>GPXSee showing OpenTopo Garmin IMG map</p>
+          </li><li>
+            <a href="gallery/enc.png">
+              <img src="gallery/enc_prev.png" width="200" height="262" alt=""/>
+            </a>
+            <h3>Nautical charts</h3>
+            <p>Electronic navigational charts (ENC); Korean localization</p>
           </li><li>
             <a href="gallery/map_overview.png">
               <img src="gallery/map_overview_prev.png" width="200" height="254" alt=""/>