Google search with keyword "in" for site search

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CmdUtils.CreateCommand({ 
     name: "google", 
     icon: "http://www.google.com/favicon.ico", 
     searchURL: "http://www.google.com/search?hl=en&q=", 
     description: "Searches Google for your words.", 
     takes: {"keywords": noun_arb_text}, 
     modifiers: {"in": noun_arb_text }, 
 
    execute: function(keywords, modifiers) { 
       var query = this.buildQuery(keywords,modifiers); 
       Utils.openUrlInBrowser( this.searchURL + query ); 
    }, 
 
    preview: function(pblock, keywords, modifiers) {
      var query = this.buildQuery(keywords,modifiers);
      
      if(query.length < 1) {
        pblock.innerHTML = this.description;
        return;
      }
      var pTemplate = "Searches Google for <b>${query}</b>"; 
      var pData = {query: query }; 
      pblock.innerHTML = CmdUtils.renderTemplate(pTemplate, pData); 
 
      var url = "http://ajax.googleapis.com/ajax/services/search/web"; 
      var params = { v: "1.0", q: query }; 
 
      
      CmdUtils.previewGet( pblock, url, params, function(data) {
        var numToDisplay = 3;
        var results = data.responseData.results.splice( 0, numToDisplay );
        
        var format = '<div id="google-search">{for result in results}<div class="gresult">  <div>    ${result.key}: <a href="${result.unescapedUrl}" accesskey="${result.key}">${result.title}</a>  </div>  <xul:description class="gresult-content">${result.content}</xul:description>  <div class="gresult-url">${result.visibleUrl}</div></div>{forelse}  <b>Your search - ${searchTerm} - did not match any documents. </b>{/for}<small>Tip: You can go to any result in this preview by using its number as an access key. (Linux and Windows: alt-number, Mac: control-number)</small></div>'
;
        
        pblock.innerHTML = CmdUtils.renderTemplate( format, {results:results, searchTerm:query});
        
      }, "json");

    }, 

 
    buildQuery: function(keywords, modifiers) 
     { 
         var site = modifiers.in.text; 
 
        if(site) 
         { 
             if(site == "here") 
             { 
               bw = CmdUtils.getWindowInsecure();
               site = bw.location.host;  
             } 
 
            return 'site:' + site + ' ' + keywords.text; 
         } 
       else { return keywords.text; } 
     }, 
});