http provider

http.js

+(function () {
+    var HttpProvider = function (host) {
+        this.handlers = [];
+        this.host = host;
+    };
+
+    //TODO unify the format of object passed to 'send method'
+    function formatJsonRpcObject(object) {
+        return {
+            jsonrpc: '2.0',
+            method: object.call,
+            params: object.args,
+            id: object._id
+        }
+    };
+
+    //TODO unify the format of output messages, maybe there should be objects instead
+    function formatJsonRpcMessage(message) {    
+        var object = JSON.parse(message);
+       
+        return JSON.stringify({
+            _id: object.id,
+            data: object.result
+        });
+    };
+
+    HttpProvider.prototype.send = function (payload) {
+        var data = formatJsonRpcObject(payload);
+
+        var request = new XMLHttpRequest();
+        request.open("POST", this.host, true);
+        request.send(JSON.stringify(data));
+        var self = this;
+        request.onreadystatechange = function () {
+            if (request.readyState === 4) {
+                self.handlers.forEach(function (handler) {
+                    handler.call(self, formatJsonRpcMessage(request.responseText));
+                });
+            }
+        }
+    };
+
+    Object.defineProperty(HttpProvider.prototype, "onmessage", {
+        set: function (handler) {
+            this.handlers.push(handler);
+        }
+    });
+
+    if (typeof(web3) !== "undefined" && web3.providers !== undefined) {
+        web3.providers.HttpProvider = HttpProvider;
+    }
+})();

main.js

@@ -49,37 +49,40 @@
         eth: {
             prototype: Object(),
 
-
+            //TODO solve the issue with numberOrHash impl
             block: function(numberOrHash) {
                 return new Promise(function(resolve, reject) {
-                    /*
-                    var func;
-                    if(typeof numberOrHash == "string") {
-                        func =  "getBlockByHash";
-                    } else {
-                        func =  "getBlockByNumber";
-                    }
-                    */
-
-                    web3.provider.send({call: /*func*/"block", args: [numberOrHash]}, function(block) {
+                    var args = typeof numberOrHash === "string" ? [0, numberOrHash] : [numberOrHash, ""];
+                    web3.provider.send({call: "block", args: args}, function(block) {
                         if(block)
                             resolve(block);
                         else
                             reject("not found");
-
                     });
                 });
             },
 
             transaction: function(numberOrHash, nth) {
                 return new Promise(function(resolve, reject) {
-                    reject("`transaction` not yet implemented")
+                    var args = typeof numberOrHash === "string" ? [0, numberOrHash, nth] : [numberOrHash, "", nth];
+                    web3.provider.send({call: "transaction", args: args}, function(block) {
+                        if(block)
+                            resolve(block);
+                        else
+                            reject("not found");
+                    });
                 });
             },
 
             uncle: function(numberOrHash, nth) {
                 return new Promise(function(resolve, reject) {
-                    reject("`uncle` not yet implemented")
+                    var args = typeof numberOrHash === "string" ? [0, numberOrHash, nth] : [numberOrHash, "", nth];
+                    web3.provider.send({call: "uncle", args: args}, function(block) {
+                        if(block)
+                            resolve(block);
+                        else
+                            reject("not found");
+                    });
                 });
             },
 
@@ -128,7 +131,7 @@
                 return Promise.all(promises).then(function() {
                     return new Promise(function(resolve, reject) {
                         params.data = params.data.join("");
-                        web3.provider.send({call: "transact", args: ["0x"+params]}, function(data) {
+                        web3.provider.send({call: "transact", args: [params]}, function(data) {
                             if(data[1])
                                 reject(data[0]);
                             else