Utility functions. Simple functions I don't want to forget.

kent-util

var capitaliseFirstLetter = function(string) {
  return string.charAt(0).toUpperCase() + string.slice(1);
};

/*
 * Detect IE. From http://stackoverflow.com/a/16657946
 * ----------------------------------------------------------
 * If you're not in IE (or IE version is less than 5) then:
 * ie === undefined
 * If you're in IE (>=5) then you can determine which version:
 * ie === 7; // IE7
 * Thus, to detect IE:
 * if (ie) {}
 * And to detect the version:
 * ie === 6 // IE6
 * ie > 7 // IE8, IE9, IE10 ...
 * ie < 9 // Anything less than IE9
 * ----------------------------------------------------------
 */
var ie = (function() {
  var undef;
  var rv = -1; // Return value assumes failure.
  if (navigator.appName == 'Microsoft Internet Explorer') {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null) {
      rv = parseFloat( RegExp.$1 );
    }
  }
  return ((rv > -1) ? rv : undef);
}());

var randomNumber = function(low, high) {
  return Math.floor(Math.random() * high) + low;
};