opensearch.js

function addSearchProvider(uri) { 
  if ((typeof window.external == "object") 
      && (typeof window.external.AddSearchProvider == "function")) { 
    window.external.AddSearchProvider(uri); 
  } else { 
    alert("require browser that support opensearch standard (such as Firefox 2+ or IE 7+)  to install"); 
  } 
} 

<!--
// function installSearchEngine() {
//  if (window.external && ("AddSearchProvider" in window.external)) {
//   window.external.AddSearchProvider("snurl.com/safersearch");
//  }
// }

-->

opensearch.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">

<!--
   <ShortName>Web Search</ShortName>
   <Description>DennyHalim.com search</Description>
   <Tags>dennyhalim search</Tags>
   <Contact>[email protected]</Contact>
   <Url type="application/rss+xml" 
        template="http://example.com/?q={searchTerms}&amp;pw={startPage?}&amp;format=rss"/>

more detailed format:
   <ShortName>Web Search</ShortName>
   <Description>Use Example.com to search the Web.</Description>
   <Tags>example web</Tags>
   <Contact>[email protected]</Contact>
   <Url type="application/atom+xml"
        template="http://example.com/?q={searchTerms}&amp;pw={startPage?}&amp;format=atom"/>
   <Url type="application/rss+xml"
        template="http://example.com/?q={searchTerms}&amp;pw={startPage?}&amp;format=rss"/>
   <Url type="text/html" 
        template="http://example.com/?q={searchTerms}&amp;pw={startPage?}"/>
   <LongName>Example.com Web Search</LongName>
   <Image height="64" width="64" type="image/png">http://example.com/websearch.png</Image>
   <Image height="16" width="16" type="image/vnd.microsoft.icon">http://example.com/websearch.ico</Image>
   <Query role="example" searchTerms="cat" />
   <Developer>Example.com Development Team</Developer>
   <Attribution>
     Search data Copyright 2005, Example.com, Inc., All Rights Reserved
   </Attribution>
   <SyndicationRight>open</SyndicationRight>
   <AdultContent>false</AdultContent>
   <Language>en-us</Language>
   <OutputEncoding>UTF-8</OutputEncoding>
   <InputEncoding>UTF-8</InputEncoding>



refs
http://blogs.msdn.com/ie/archive/2006/02/07/527266.aspx
http://globalmoxie.com/blog/opensearch-browser-search-field~print.shtml
https://developer.mozilla.org/en/Creating_OpenSearch_plugins_for_Firefox
http://www.opensearch.org/Specifications/OpenSearch/1.1
http://ready.to/search/en/
-->

 </OpenSearchDescription>

safe-search.xml

<?xml version="1.0" encoding="UTF-8"?>
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">

   <ShortName>search games, homework research and more</ShortName>
   <Description>kiddysurf.blogspot.com safe search. either search for fun games or research your homework, this is the place.</Description>
   <Tags>games kids teen parents teacher school research</Tags>
   <Contact>[email protected]</Contact>
   <Url type="text/html" template="http://www.google.com/cse?cx=003127643427034444210%3Anchtdfnq904&amp;ie=UTF-8&amp;safe=strict&amp;q={searchTerms}&amp;sa=Search"/>
   <Url type="application/opensearchdescription+xml"
     rel="self"
     template="http://snurl.com/safersearch" />

</OpenSearchDescription>

wordsearch.xml

<?xml version="1.0" encoding="UTF-8"?>
<OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">

   <ShortName>wordsearch</ShortName>
   <Description>search dozens of dictionary, thesaurus, encyclopedia and more</Description>
   <Tags>dictionary encyclopedia thesaurus references teacher school research</Tags>
   <Contact>[email protected]</Contact>
   <Url type="text/html" template="http://www.google.com/cse?cx=003127643427034444210:4rtzg2gih6q&amp;ie=UTF-8&amp;safe=strict&amp;q={searchTerms}&amp;sa=Search"/>
   <Url type="application/opensearchdescription+xml"
     rel="self"
     template="http://snurl.com/word-search" />

</OpenSearchDescription>