formatWithSuffix.js

window.formatWithSuffix = function(input){
  suffixes = ['', 'k', 'm', 'g', 't'];
  suffixIndex = 0;

  while( Math.abs(input) >= 1000 && suffixIndex < suffixes.length ){
      suffixIndex++;
      input /= 1000;
  }

  return (
      input > 0
          ? Math.floor( input * 1000) / 1000
          : Math.ceil( input * 1000) / 1000
      )
      + suffixes[suffixIndex];
}