title: How to make cache directory writable
body: <p>Forgive me for my simple question but how do you make it writable?</p>
  
  <p>I read it it needs to be change to for example: for timthumbs or <a href="http://shiftingpixel.com/2008/03/03/smart-image-resizer/" rel="nofollow">http://shiftingpixel.com/2008/03/03/smart-image-resizer/</a></p>
  
  <p>"Make your imagecache directory is writable by the web server (usually chmod 775)"</p>
  
  <p>So I just call the function or what?</p>