Move web3 definition to where it is required in the encoder

src/universal-dapp.js

@@ -180,7 +180,6 @@ UniversalDApp.prototype.getInstanceInterface = function (contract, address, $tar
             return 1;
         }
     });
-    var web3contract = this.web3.eth.contract(abi);
     var funABI = this.getConstructorInterface(abi);
     var $createInterface = $('<div class="createContract"/>');
 
@@ -252,7 +251,7 @@ UniversalDApp.prototype.getInstanceInterface = function (contract, address, $tar
                 }
             });
         } else {
-            var eventFilter = web3contract.at(address).allEvents();
+            var eventFilter = this.web3.eth.contract(abi).at(address).allEvents();
             eventFilter.watch(parseLogs);
         }
         $instance.append($title);