Insert a variable into another variable Javascript
<p>My code looks like this:</p>

<p>ORIGINAL</p>

<pre><code>var key_word = {'dentists'};

var pageOptions = { 
  'query': 'cars',
  'hl': 'en'
};
</code></pre>

<p>I want to insert the variable 'key_word' into where it says cars:</p>

<p>NEW CODE - entire code</p>

<pre><code>&lt;div id="adcontainer1"&gt;&lt;/div&gt;
&lt;script src="http://www.google.com/adsense/search/ads.js" type="text/javascript"&gt;&lt;/script&gt; 
&lt;script type="text/javascript" charset="utf-8"&gt; 
var key_word = "dentists";

var pageOptions = { 
  'pubId': 'pub-999999999999999',
  'query': function(){ return key_word; },
  'hl': 'en'
};

var adblock1 = { 
  'container': 'adcontainer1',
  'number': '1',
  'width': '700px',
  'lines': '1',
  'colorBackground': 'FBFFDB'
};

new google.ads.search.Ads(pageOptions, adblock1);
&lt;/script&gt;
</code></pre>

<p>From the resulting ad, it appears dentists is not being passed correctly.  Instead the ad is running the text 'key word' instead of the variable key_word, which is the text 'dentists'.  Do I have a syntax problem here?</p>
