String.prototype.ucfirst = function()
{
   // Split the string into words if string contains multiple words.
   var x = this.split(/\s+/g);
   for(var i = 0; i < x.length; i++)
   {
      // Splits the word into two parts. One part being the first letter,
      // second being the rest of the word.
      var parts = x[i].match(/(\w)(\w*)/);
 
      // Put it back together but uppercase the first letter and lowercase the rest of thw word.
      x[i] = parts[1].toUpperCase() + parts[2].toLowerCase();
   }
 
   // Rejoin the string and return.
   return x.join(' ');
};