to the same function
  // --------------------------------------------------------------------
  ev.cancelBubble = function(e) {
    e = ev.resolve(e);
    if (typeof(e.stopPropagation)=="function") { e.stopPropagation(); } 
    if (defined(e.cancelBubble)) { e.cancelBubble = true; }
  };
  ev.stopPropagation = ev.cancelBubble;

  // Prevent the default handling of the event to occur
  // --------------------------------------------------------------------
  ev.preventDefault = function(e) {
    e = ev.resolve(e);
    if (typeof(e.preventDefault)=="function") { e.preventDefault(); } 
    if (defined(e.returnValue)) { e.returnValue = false; }
  };
  
  return ev;
})();

/* ******************************************************************* */
/*   SCREEN FUNCTIONS                                                  */
/* ******************************************************************* */
var JTTScreen = (function() {
  var screen = {};

  // Get a reference to the body
  // --------------------------------------------------------------------
  screen.getBody = function() {
    if (document.body) {
      return document.body;
    }
    if (document.getElementsByTagName) {
      var bodies = document.getElementsByTagName("BODY");
      if (bodies!=null && bodies.length>0) {
        return bodies[0];
      }
    }
    return null;
  };

  // Get the amount that the main document has scrolled from top
  // --------------------------------------------------------------------
  screen.getScrollTop = function() {
    if (document.documentElement && defined(document.documentElement.scrollTop) && document.documentElement.scrollTop>0) {
      return document.documentElement.scrollTop;
    }
    if (document.body && defined(document.body.scrollTop)) {
      return document.body.scrollTop;
    }
    return null;
  };
  
  // Get the amount that the main document has scrolled from left
  // --------------------------------------------------------------------
  screen.getScrollLeft = function() {
    if (document.documentElement && defined(document.documentElement.scrollLeft) && document.documentElement.scrollLeft>0) {
      return document.documentElement.scrollLeft;
    }
    if (document.body && defined(document.body.scrollLeft)) {
      return document.body.scrollLeft;
    }
    return null;
  };
  
  // Util function to default a bad number to 0
  // --------------------------------------------------------------------
  screen.zero = function(n) {
    return (!defined(n) || isNaN(n))?0:n;
  };

  // Get the width of the entire document
  // --------------------------------------------------------------------
  screen.getDocumentWidth = function() {
    var width = 0;
    var body = screen.getBody();
    if (document.documentElement && (!document.compatMode || document.compatMode=="CSS1Compat")) {
        var rightMargin = parseInt(JTTCSS.get(body,'marginRight'),10) || 0;
        var leftMargin = parseInt(JTTCSS.get(body,'marginLeft'), 10) || 0;
      width = Math.max(body.offsetWidth + leftMargin + rightMargin, document.documentElement.clientWidth);
    }
    else {
      width =  Math.max(body.clientWidth, body.scrollWidth);
    }
    if (isNaN(width) || width==0) {
      width = screen.zero(self.innerWidth);
    }
    return width;
  };
  
  // Get the height of the entire document
  // --------------------------------------------------------------------
  screen.getDocumentHeight = function() {
    var body = screen.getBody();
    var innerHeight = (defined(self.innerHeight)&&!isNaN(self.innerHeight))?self.innerHeight:0;
    if (document.documentElement && (!document.compatMode || document.compatMode=="CSS1Compat")) {
        var topMargin = parseInt(JTTCSS.get(body,'marginTop'),10) || 0;
        var bottomMargin = parseInt(JTTCSS.get(body,'marginBottom'), 10) || 0;
      return Math.max(body.offsetHeight + topMargin + bottomMargin, document.documentElement.clientHeight, document.documentElement.scrollHeight, screen.zero(self.innerHeight));
    }
    return Math.max(body.scrollHeight, body.clientHeight, screen.zero(self.innerHeight));
  };
  
  // Get the width of the viewport (viewable area) in the browser window
  // --------------------------------------------------------------------
  screen.getViewportWidth = function() {
    if (document.documentElement && (!document.compatMode || document.compatMode=="CSS1Compat")) {
      return document.documentElement.clientWidth;
    }
    else if (document.compatMode && document.body) {
      return document.body.clientWidth;
    }
    return screen.zero(self.innerWidth);
  };
  
  // Get the height of the viewport (viewable area) in the browser window
  // --------------------------------------------------------------------
  screen.getViewportHeight = function() {
    if (!window.opera && document.documentElement && (!document.compatMode || document.compatMode=="CSS1Compat")) {
      return document.documentElement.clientHeight;
    }
    else if (document.compatMode && !window.opera && document.body) {
      return document.body.clientHeight;
    }
    return screen.zero(self.innerHeight);
  };

  return screen;
})();var Sort = (function(){
  var sort = {};
  sort.AlphaNumeric = function(a,b) {
    if (a==b) { return 0; }
    if (a<b) { return -1; }
    return 1;
  };

  sort.Default = sort.AlphaNumeric;
  
  sort.NumericConversion = function(val) {
    if (typeof(val)!="number") {
      if (typeof(val)=="string") {
        val = parseFloat(val.replace(/,/g,''));
        if (isNaN(val) || val==null) { val=0; }
      }
      else {
        val = 0;
      }
    }
    return val;
  };
  
  sort.Numeric = function(a,b) {
    return sort.NumericConversion(a)-sort.NumericConversion(b);
  };

  sort.IgnoreCaseConversion = function(val) {
    if (val==null) { val=""; }
    return (""+val).toLowerCase();
  };

  sort.IgnoreCase = function(a,b) {
    return sort.AlphaNumeric(sort.IgnoreCaseConversion(a),sort.IgnoreCaseConversion(b));
  };

  sort.CurrencyConversion = function(val) {
    if (typeof(val)=="string") {
      val = val.replace(/^[^\d\.]/,'');
    }
    return sort.NumericConversion(val);
  };
  
  sort.Currency = function(a,b) {
    return sort.Numeric(sort.CurrencyConversion(a),sort.CurrencyConversion(b));
  };
  
  sort.DateConversion = function(val) {
    // inner util function to parse date formats
    function getdate(str) {
      // inner util function to convert 2-digit years to 4
      function fixYear(yr) {
        yr = +yr;
        if (yr<50) { yr += 2000; }
        else if (yr<100) { yr += 1900; }
        return yr;
      };
      var ret;
      // YYYY-MM-DD
      if (ret=str.match(/(\d{2,4})-(\d{1,2})-(\d{1,2})/)) {
        return (fixYear(ret[1])*1