/*
  Usage 1: define the default prefix by using an object with the property prefix as a parameter which contains a string value; {prefix: 'id'}
  Usage 2: call the function jQuery.uuid() with a string parameter p to be used as a prefix to generate a random uuid;
  Usage 3: call the function jQuery.uuid() with no parameters to generate a uuid with the default prefix; defaul prefix: '' (empty string)
  */

  /*
  Generate fragment of random numbers
  */
  jQuery._uuid_default_prefix = '';
  jQuery._uuidlet = function () {
    return(((1+Math.random())*0x10000)|0).toString(16).substring(1);
  };
  /*
  Generates random uuid
  */
  jQuery.uuid = function (p) {
    if (typeof(p) == 'object' && typeof(p.prefix) == 'string') {
      jQuery._uuid_default_prefix = p.prefix;
    } else {
      p = p || jQuery._uuid_default_prefix || '';
      return(p+jQuery._uuidlet()+jQuery._uuidlet()+"-"+jQuery._uuidlet()+"-"+jQuery._uuidlet()+"-"+jQuery._uuidlet()+"-"+jQuery._uuidlet()+jQuery._uuidlet()+jQuery._uuidlet());
    };
  };