jQuery addClass to element based on attribute value
<p>I am stuck with this and need some help.  I know the logical solution for this, but not sure how to translate it to jQuery code (newbie here :)).  Any suggestions or help greatly appreciated!</p>

<p>I need to add a css class (active class), to an element that has a title attribute equal to the value of a variable.  So, let's say my variable currentElement = 'great day'.  There is also an a tag element on the page that has the title attribute of 'great day', such as <code>&lt;a title='great day' href='#'&gt;</code>.</p>

<p>With jQuery I want to:  Find a tag in the DOM where currentElement == a tag title and add css class.  So, ideally it should find that a tag and add the css class to it.</p>

<p>I came up with something like this but not working:</p>

<pre><code>/* set currentElement var to the src attribute 
   value of an a tag on the page
   this works */
var currentElement = $('#greatLink'] img[src*=' + test + ']').attr('src');

/* now find an a tag on the page that has 
   the same title attribute as var currentElement
   this does not work */
$("a[title ='+currentElement+']").addClass('selectedThumb'); 
</code></pre>
