title: Find all <img> tags and change style attribute
body: <p>i am trying to find a way to get the  tag from a string and remove the style attribute .
  After that i want to add my own style and keep the following text.. 
  For example, i have:</p>
  
  <pre><code>&lt;p&gt;&lt;img alt="" src="images/epsth/arismagnisiakos.jpg" style="width: 600px; height: 405px;" /&gt;&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;
  </code></pre>
  
  <p>end the endresult should be:</p>
  
  <pre><code>&lt;p&gt;&lt;img alt="" src="images/epsth/arismagnisiakos.jpg" style="width: 100%;" /&gt;&lt;/p&gt;&lt;p&gt;&amp;nbsp;&lt;/p&gt;&lt;p&gt;
  </code></pre>
  
  <p>I have unsuccesfully tried regex but it seems like i am too dumb to understand its functionality... </p>
  
  <p>Every help would be appreciated!
  Greetings from Greece
  Jim</p>