Hi,
you can embed 'google search' engine to your website.
The basic technique involved here is to be able to manipulate one of
the variables handed to the Google search engine, a variable called
sitesearch.
Set it to a null value and you're searching the entire World Wide Web,
but set it to a specific domain and it's constrained exactly as if you
had typed in the Google special notation
site:domain.
In addition to that, you need an input field and a submit button. Put
them all together and here's the minimalist Google search form that
lets the user alternate between just your site (well, in this case just
my site) or the entire Web:
<form method="get" action="http://www.google.com/search">
<input type="text" name="q" size="31"
maxlength="255" value="" />
<input type="submit" value="Google Search" />
<input type="radio" name="sitesearch" value="" />
The Web
<input type="radio" name="sitesearch"
value="askdavetaylor.com" checked /> Ask Dave Taylor<br />
There are some additional tweaks we can apply to make it a bit more
fancy, including changing the radio buttons to a single check box, and
<form method="get" action="http://www.google.com/search">
<div style="border:1px solid black;padding:4px;width:20em;">
<table border="0" cellpadding="0">
<tr><td>
<input type="text" name="q" size="25"
maxlength="255" value="" />
<input type="submit" value="Google Search" /></td></tr>
<tr><td align="center" style="font-size:75%">
<input type="checkbox" name="sitesearch"
value="askdavetaylor.com" checked /> only search Ask Dave Taylor<br />
</td></tr></table>
</div>
</form>
aligning things a bit more nicely using a table and some simple CSS:
</form>
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