title: javascript compare strings without being case sensitive
body: <p>I have to check some strings using JavaScript but case sensitivity is causing problems. 
  for example </p>
  
  <pre><code>if('abc'=='ABC')
  {
  return true;
  }
  </code></pre>
  
  <p>it will not go inside the if loop though the meaning of the word are same.
  I cant use tolower clause too since i dont know the data how it would come it means 
  for ex:</p>
  
  <pre><code>if('aBc'=='abC')
  {
  return true;
  }
  </code></pre>
  
  <p>how to write the JS function for this if it could be done by jquery.</p>