diff --git a/dom.js b/dom.js
index 4c2530d..ca825f5 100644
--- a/dom.js
+++ b/dom.js
@@ -42,6 +42,7 @@ jx.dom.remove = function(id){
             _item = id ;
     }
     _item.parentNode.removeChild(_item) ;
+    return _item ;
     
 }
 
diff --git a/ext/ml.js b/ext/ml.js
index 7e96221..6fd4902 100644
--- a/ext/ml.js
+++ b/ext/ml.js
@@ -58,4 +58,3 @@ jx.ml.mapreduce = function(data,fn_map,fn_reduce){
  * The modules developed below will perform linear regression and logistic regression
  */
 jx.ml.regression = {}
-
diff --git a/rpc.js b/rpc.js
index 8b7bb68..c66d303 100755
--- a/rpc.js
+++ b/rpc.js
@@ -112,6 +112,15 @@ jx.ajax.get.instance = function(){
             
             
         }
+	this.put = function(url,callback){
+		this.send(url,callback,'PUT') ;
+	}
+	this.get = function(url,callback){
+		this.send(url,callback,'GET') ;
+	}
+	this.post = function(url,callback){
+		this.send(url,callback,'POST') ;
+	}
     }//-- end of the factory method
     return new factory() ;
 }
@@ -119,3 +128,4 @@ jx.ajax.get.instance = function(){
 //
 // backward compatibility
 jx.ajax.getInstance = jx.ajax.get.instance ;
+HttpClient = jx.ajax.get ;
diff --git a/utils.js b/utils.js
index d92ea73..bc10207 100644
--- a/utils.js
+++ b/utils.js
@@ -89,6 +89,20 @@ jx.utils.unique = function (list,getKey){
 	})
     }
 }
+jx.utils.join = function(x,y){
+	if(x.length != y.length){
+		return [] 
+	}else{
+		var rec = x ;
+		for(var i in rec){
+			//
+			//@TODO: Consider the case we are adding to a matrix
+			//
+			rec[i] = [x[i],y[i]]
+		}
+		return rec ;
+	}
+}
 /**
  * Implementation of a few standard design patterns. Their use is user/dependent
  * For more information on how/when to use a design pattern please use google/wikipedia ;-)
@@ -169,3 +183,4 @@ jx.utils.patterns.observer = function(lobservers,init){
 * @return 	array containing casted type
 */
 jx.utils.cast = jx.utils.patterns.visitor ;
+