title: Logarithmic slider
body: <p>I have a slider with values ranging from 0 to 100.</p>
  
  <p>I want to map them to a range from 100 to 10,000,000.</p>
  
  <p>I've seen some functions scattered around the net but they're all in C++. 
  I need it in Javascript.</p>
  
  <p>Any ideas?</p>