title: jquery function to search array values
body: <p>I have a structure like this:</p>
  
  <pre><code>var var1 = { 
       array1 : ['value1','value2', ...],
       array2 : ['value3','value4', ...]
       ...
  };
  </code></pre>
  
  <p>I need a javascript function to search values in this structure, and if exists,
  this function will return the name of the array.</p>