fix docs row click jumping, close #3609

reference.html

@@ -6374,14 +6374,19 @@ var Leaflet = L.noConflict();
 
 <script>
 var tables = document.getElementsByTagName('table');
+
 for (var i = 0, len = tables.length; i < len; i++) {
     var id = tables[i].getAttribute('data-id'),
         tds = tables[i].getElementsByTagName('td');
+
     for (var j = 0, tdLen = tds.length; j < tdLen; j++) {
         if (tds[j].cellIndex === 0) {
             tds[j].parentNode.id = id + '-' + (tds[j].textContent || tds[j].innerText).split('(')[0].toLowerCase();
+
             tds[j].parentNode.onclick = function(e) {
-                window.location.hash = '#' + this.id;
+            	if (e.offsetX < 0) {
+                	window.location.hash = '#' + this.id;
+                }
             };
         }
     }