--- Revision 569
+++ Revision 570
@@ -17,7 +17,8 @@
     delay: 0.2,                            // Delay before running ajax request
     shadow: false,                         // Shadow theme name (false = no shadow)
     highlight: false,                      // Highlight search string in list
-    tokens: false                          // Tokens used to automatically adds a new entry (ex tokens:[',', ' '] for coma and spaces)
+    tokens: false,                         // Tokens used to automatically adds a new entry (ex tokens:[',', ' '] for coma and spaces)
+    unique: true                           // Do not display in suggestion a selected value
   }, 
   
   initialize: function(element, options) {   
@@ -82,7 +83,7 @@
     else
       this.hideAutocomplete().fire("input:empty");
     
-    return this.fire("element:added", {element: li});
+    return this.fire("element:added", {element: li, text: text, value: value});
   },
  
   remove: function(element) { 
@@ -298,7 +299,7 @@
     this.autocompletionContainer.hide(); 
     this.fire("request:started");
 
-    new Ajax.Request(this.options.url, {parameters: {search: search, max: this.options.max.selection}, onComplete: function(transport) {        
+    new Ajax.Request(this.options.url, {parameters: {search: search, max: this.options.max.selection, "selected[]": this.selectedValues()}, onComplete: function(transport) {        
       this.setAutocompleteList(transport.responseText.evalJSON());
       this.timer = null;
       this.fire("request:completed");
@@ -418,8 +419,14 @@
         this.message.hide();
         if (this.options.url)
           this.selectedList = this.list;
-        else
+        else {
           this.selectedList = this.list.findAll(function(entry) {return entry.text.match(value)}).slice(0, this.options.max.selection);   
+          if (this.options.unique) {
+            var selected= this.selectedValues();
+            if (! selected.empty())
+              this.selectedList = this.selectedList.findAll(function(entry) {return !selected.include(entry.value)});
+          }
+        }
         this.autocompletionContainer.update("");  
         if (this.selectedList.empty()) {
           this.hideAutocomplete().fire('selection:empty');
@@ -514,6 +521,11 @@
   updateHiddenField: function() {
     var separator = this.options.tokens ? this.options.tokens.first() : " ";
     this.hidden.value = this.selectedText ? $A([this.selectedText, this.input.value]).join(separator) : this.input.value;
+  },
+  
+  selectedValues: function() {
+    var selected = this.container.select("li." + this.getClassName("box"));
+    return  selected.collect(function(element) {return element.readAttribute("pui-autocomplete:value")});
   }
 });