// ===================================================================
// Author: Matt Kruse <matt@mattkruse.com>
// WWW: http://www.mattkruse.com/
//
// NOTICE: You may use this code for any purpose, commercial or
// private, without any further permission from the author. You may
// remove this notice from your final code if you wish, however it is
// appreciated by the author if at least my web site address is kept.
//
// You may *NOT* re-distribute this code in any way except through its
// use. That means, you can include it in your product, or your web
// site, or any other form where the code is actually being used. You
// may not put the plain javascript up on your site for download or
// include it in your javascript libraries for download. 
// If you wish to share this code with others, please just point them
// to the URL instead.
// Please DO NOT link directly to my .js files from your site. Copy
// the files to your server and use them there. Thank you.
// ===================================================================

// HISTORY
// ------------------------------------------------------------------
// May 17, 2003: Fixed bug in parseDate() for dates <1970
// March 11, 2003: Added parseDate() function
// March 11, 2003: Added "NNN" formatting option. Doesn't match up
//                 perfectly with SimpleDateFormat formats, but 
//                 backwards-compatability was required.

// ------------------------------------------------------------------
// These functions use the same 'format' strings as the 
// java.text.SimpleDateFormat class, with minor exceptions.
// The format string consists of the following abbreviations:
// 
// Field        | Full Form          | Short Form
// -------------+--------------------+-----------------------
// Year         | yyyy (4 digits)    | yy (2 digits), y (2 or 4 digits)
// Month        | MMM (name or abbr.)| MM (2 digits), M (1 or 2 digits)
//              | NNN (abbr.)        |
// Day of Month | dd (2 digits)      | d (1 or 2 digits)
// Day of Week  | EE (name)          | E (abbr)
// Hour (1-12)  | hh (2 digits)      | h (1 or 2 digits)
// Hour (0-23)  | HH (2 digits)      | H (1 or 2 digits)
// Hour (0-11)  | KK (2 digits)      | K (1 or 2 digits)
// Hour (1-24)  | kk (2 digits)      | k (1 or 2 digits)
// Minute       | mm (2 digits)      | m (1 or 2 digits)
// Second       | ss (2 digits)      | s (1 or 2 digits)
// AM/PM        | a                  |
//
// NOTE THE DIFFERENCE BETWEEN MM and mm! Month=MM, not mm!
// Examples:
//  "MMM d, y" matches: January 01, 2000
//                      Dec 1, 1900
//                      Nov 20, 00
//  "M/d/yy"   matches: 01/20/00
//                      9/2/00
//  "MMM dd, yyyy hh:mm:ssa" matches: "January 01, 2000 12:30:45AM"
// ------------------------------------------------------------------

var MONTH_NAMES=new Array('January','February','March','April','May','June','July','August','September','October','November','December','Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');
var DAY_NAMES=new Array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sun','Mon','Tue','Wed','Thu','Fri','Sat');
function LZ(x) {return(x<0||x>9?"":"0")+x}

// ------------------------------------------------------------------
// isDate ( date_string, format_string )
// Returns true if date string matches format of format string and
// is a valid date. Else returns false.
// It is recommended that you trim whitespace around the value before
// passing it to this function, as whitespace is NOT ignored!
// ------------------------------------------------------------------
function isDate(val,format) {
	var date=getDateFromFormat(val,format);
	if (date==0) { return false; }
	return true;
	}

// -------------------------------------------------------------------
// compareDates(date1,date1format,date2,date2format)
//   Compare two date strings to see which is greater.
//   Returns:
//   1 if date1 is greater than date2
//   0 if date2 is greater than date1 of if they are the same
//  -1 if either of the dates is in an invalid format
// -------------------------------------------------------------------
function compareDates(date1,dateformat1,date2,dateformat2) {
	var d1=getDateFromFormat(date1,dateformat1);
	var d2=getDateFromFormat(date2,dateformat2);
	if (d1==0 || d2==0) {
		return -1;
		}
	else if (d1 > d2) {
		return 1;
		}
	return 0;
	}

// ------------------------------------------------------------------
// formatDate (date_object, format)
// Returns a date in the output format specified.
// The format string uses the same abbreviations as in getDateFromFormat()
// ------------------------------------------------------------------
function formatDate(date,format) {
	format=format+"";
	var result="";
	var i_format=0;
	var c="";
	var token="";
	var y=date.getYear()+"";
	var M=date.getMonth()+1;
	var d=date.getDate();
	var E=date.getDay();
	var H=date.getHours();
	var m=date.getMinutes();
	var s=date.getSeconds();
	var yyyy,yy,MMM,MM,dd,hh,h,mm,ss,ampm,HH,H,KK,K,kk,k;
	// Convert real date parts into formatted versions
	var value=new Object();
	if (y.length < 4) {y=""+(y-0+1900);}
	value["y"]=""+y;
	value["yyyy"]=y;
	value["yy"]=y.substring(2,4);
	value["M"]=M;
	value["MM"]=LZ(M);
	value["MMM"]=MONTH_NAMES[M-1];
	value["NNN"]=MONTH_NAMES[M+11];
	value["d"]=d;
	value["dd"]=LZ(d);
	value["E"]=DAY_NAMES[E+7];
	value["EE"]=DAY_NAMES[E];
	value["H"]=H;
	value["HH"]=LZ(H);
	if (H==0){value["h"]=12;}
	else if (H>12){value["h"]=H-12;}
	else {value["h"]=H;}
	value["hh"]=LZ(value["h"]);
	if (H>11){value["K"]=H-12;} else {value["K"]=H;}
	value["k"]=H+1;
	value["KK"]=LZ(value["K"]);
	value["kk"]=LZ(value["k"]);
	if (H > 11) { value["a"]="PM"; }
	else { value["a"]="AM"; }
	value["m"]=m;
	value["mm"]=LZ(m);
	value["s"]=s;
	value["ss"]=LZ(s);
	while (i_format < format.length) {
		c=format.charAt(i_format);
		token="";
		while ((format.charAt(i_format)==c) && (i_format < format.length)) {
			token += format.charAt(i_format++);
			}
		if (value[token] != null) { result=result + value[token]; }
		else { result=result + token; }
		}
	return result;
	}
	
// ------------------------------------------------------------------
// Utility functions for parsing in getDateFromFormat()
// ------------------------------------------------------------------
function _isInteger(val) {
	var digits="1234567890";
	for (var i=0; i < val.length; i++) {
		if (digits.indexOf(val.charAt(i))==-1) { return false; }
		}
	return true;
	}
function _getInt(str,i,minlength,maxlength) {
	for (var x=maxlength; x>=minlength; x--) {
		var token=str.substring(i,i+x);
		if (token.length < minlength) { return null; }
		if (_isInteger(token)) { return token; }
		}
	return null;
	}
	
// ------------------------------------------------------------------
// getDateFromFormat( date_string , format_string )
//
// This function takes a date string and a format string. It matches
// If the date string matches the format string, it returns the 
// getTime() of the date. If it does not match, it returns 0.
// ------------------------------------------------------------------
function getDateFromFormat(val,format) {
	val=val+"";
	format=format+"";
	var i_val=0;
	var i_format=0;
	var c="";
	var token="";
	var token2="";
	var x,y;
	var now=new Date();
	var year=now.getYear();
	var month=now.getMonth()+1;
	var date=1;
	var hh=now.getHours();
	var mm=now.getMinutes();
	var ss=now.getSeconds();
	var ampm="";
	
	while (i_format < format.length) {
		// Get next token from format string
		c=format.charAt(i_format);
		token="";
		while ((format.charAt(i_format)==c) && (i_format < format.length)) {
			token += format.charAt(i_format++);
			}
		// Extract contents of value based on format token
		if (token=="yyyy" || token=="yy" || token=="y") {
			if (token=="yyyy") { x=4;y=4; }
			if (token=="yy")   { x=2;y=2; }
			if (token=="y")    { x=2;y=4; }
			year=_getInt(val,i_val,x,y);
			if (year==null) { return 0; }
			i_val += year.length;
			if (year.length==2) {
				if (year > 70) { year=1900+(year-0); }
				else { year=2000+(year-0); }
				}
			}
		else if (token=="MMM"||token=="NNN"){
			month=0;
			for (var i=0; i<MONTH_NAMES.length; i++) {
				var month_name=MONTH_NAMES[i];
				if (val.substring(i_val,i_val+month_name.length).toLowerCase()==month_name.toLowerCase()) {
					if (token=="MMM"||(token=="NNN"&&i>11)) {
						month=i+1;
						if (month>12) { month -= 12; }
						i_val += month_name.length;
						break;
						}
					}
				}
			if ((month < 1)||(month>12)){return 0;}
			}
		else if (token=="EE"||token=="E"){
			for (var i=0; i<DAY_NAMES.length; i++) {
				var day_name=DAY_NAMES[i];
				if (val.substring(i_val,i_val+day_name.length).toLowerCase()==day_name.toLowerCase()) {
					i_val += day_name.length;
					break;
					}
				}
			}
		else if (token=="MM"||token=="M") {
			month=_getInt(val,i_val,token.length,2);
			if(month==null||(month<1)||(month>12)){return 0;}
			i_val+=month.length;}
		else if (token=="dd"||token=="d") {
			date=_getInt(val,i_val,token.length,2);
			if(date==null||(date<1)||(date>31)){return 0;}
			i_val+=date.length;}
		else if (token=="hh"||token=="h") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<1)||(hh>12)){return 0;}
			i_val+=hh.length;}
		else if (token=="HH"||token=="H") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<0)||(hh>23)){return 0;}
			i_val+=hh.length;}
		else if (token=="KK"||token=="K") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<0)||(hh>11)){return 0;}
			i_val+=hh.length;}
		else if (token=="kk"||token=="k") {
			hh=_getInt(val,i_val,token.length,2);
			if(hh==null||(hh<1)||(hh>24)){return 0;}
			i_val+=hh.length;hh--;}
		else if (token=="mm"||token=="m") {
			mm=_getInt(val,i_val,token.length,2);
			if(mm==null||(mm<0)||(mm>59)){return 0;}
			i_val+=mm.length;}
		else if (token=="ss"||token=="s") {
			ss=_getInt(val,i_val,token.length,2);
			if(ss==null||(ss<0)||(ss>59)){return 0;}
			i_val+=ss.length;}
		else if (token=="a") {
			if (val.substring(i_val,i_val+2).toLowerCase()=="am") {ampm="AM";}
			else if (val.substring(i_val,i_val+2).toLowerCase()=="pm") {ampm="PM";}
			else {return 0;}
			i_val+=2;}
		else {
			if (val.substring(i_val,i_val+token.length)!=token) {return 0;}
			else {i_val+=token.length;}
			}
		}
	// If there are any trailing characters left in the value, it doesn't match
	if (i_val != val.length) { return 0; }
	// Is date valid for month?
	if (month==2) {
		// Check for leap year
		if ( ( (year%4==0)&&(year%100 != 0) ) || (year%400==0) ) { // leap year
			if (date > 29){ return 0; }
			}
		else { if (date > 28) { return 0; } }
		}
	if ((month==4)||(month==6)||(month==9)||(month==11)) {
		if (date > 30) { return 0; }
		}
	// Correct hours value
	if (hh<12 && ampm=="PM") { hh=hh-0+12; }
	else if (hh>11 && ampm=="AM") { hh-=12; }
	var newdate=new Date(year,month-1,date,hh,mm,ss);
	return newdate.getTime();
	}

// ------------------------------------------------------------------
// parseDate( date_string [, prefer_euro_format] )
//
// This function takes a date string and tries to match it to a
// number of possible date formats to get the value. It will try to
// match against the following international formats, in this order:
// y-M-d   MMM d, y   MMM d,y   y-MMM-d   d-MMM-y  MMM d
// M/d/y   M-d-y      M.d.y     MMM-d     M/d      M-d
// d/M/y   d-M-y      d.M.y     d-MMM     d/M      d-M
// A second argument may be passed to instruct the method to search
// for formats like d/M/y (european format) before M/d/y (American).
// Returns a Date object or null if no patterns match.
// ------------------------------------------------------------------
function parseDate(val) {
	var preferEuro=(arguments.length==2)?arguments[1]:false;
	generalFormats=new Array('y-M-d','MMM d, y','MMM d,y','y-MMM-d','d-MMM-y','MMM d');
	monthFirst=new Array('M/d/y','M-d-y','M.d.y','MMM-d','M/d','M-d');
	dateFirst =new Array('d/M/y','d-M-y','d.M.y','d-MMM','d/M','d-M');
	var checkList=new Array('generalFormats',preferEuro?'dateFirst':'monthFirst',preferEuro?'monthFirst':'dateFirst');
	var d=null;
	for (var i=0; i<checkList.length; i++) {
		var l=window[checkList[i]];
		for (var j=0; j<l.length; j++) {
			d=getDateFromFormat(val,l[j]);
			if (d!=0) { return new Date(d); }
			}
		}
	return null;
	}
	
/// INICIO DA BIBLIOTECA TICKERTAPE
//
// Copyright (c) 2007 Colin Ramsay
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.
// 
// Cross browser mouseenter and mouseleave courtest of stchur:
// http://ecmascript.stchur.com/2007/03/15/mouseenter-and-mouseleave-events-for-firefox-and-other-non-ie-browsers/
//
// TickerTape v1.1 - http://colinramsay.co.uk/tickertape/
// A scrolling ticker-tape component which dynamically loads in articles using ajax.
//
// Vertical usage:		var ticker = new TickerTape('tickerTape', 'dataurl.php', 5000);
// Horizontal usage:	var ticker = new TickerTape('tickerTape', 'dataurl.php', 5000, true);
//
function TickerTape(url, cssClassName, scrollInterval, horizontal) {

	// Set whether this ticker scrolls horizontally
	// if it is not set or is false, then it will
	// be a vertical ticker by default.
	this.horizontal = horizontal;

	// Request JSON data from this url.
	this.dataUrl = url;

	// The classname which will be assigned to the tickertape container
	// Note: this is assigned in addition to 'basicTickerTape'.
	this.cssClassName = cssClassName;

	// How many milliseconds to wait between scrolling an item.
	this.scrollInterval = scrollInterval;

	// The id of the last item retrieved from the dataUrl.
	this.lastId = 0;

	// The total number of pixels which have been scrolled since the
	// ticker started. Used to keep track of where to scroll to next.
	this.totalScroll = 0;

	// Used to track the window.setInterval id for the scroll
	// so that we only have one scroll going at once.
	this.scrollIntervalId = null;

	// The number of items returned in the last update.
	this.numberReturned = 0;

	// Tracks the item within the container which was just scrolled.
	this.currentChild = 0;

	// Has the scroll been paused by user interaction?
	this.isScrollPaused = false;

	// If a scroll is paused, we can use this to resume
	// Otherwise it simply tracks how much we need to scroll for 
	// the currently scrolling element.
	this.amountToScroll = 0;

	// Start it up!
	this.init();
};


// Creates a <div> element at the point where the TickerTape script
// was included. The <div> has a class of tickerTape and a random id.
TickerTape.prototype.createDom = function() {

	// Generate a random number and use it to build for the id of the <ul>
	var randomId = "tickerTape" + Math.floor(Math.random()*999);

	// Write out a <div> element to the calling document
	document.write('<div class="'+ this.cssClassName +' basicTickerTape" id="' + randomId +'"><ul></ul></div>');

	var tickerTapeWrapper = document.getElementById(randomId);

	xb.addEvent(tickerTapeWrapper, 'mouseenter', this.pauseScroll.simpleBind(this));

	xb.addEvent(tickerTapeWrapper, 'mouseleave', this.resumeScroll.simpleBind(this));

	// Assign the new <div> element to a property of the tickertape class for easy access
	this.container = tickerTapeWrapper.getElementsByTagName('ul')[0];
}


// Calls the server with lastId we received to get the next lot of items back. Note
// that this.lastId will be 0 if this is the first time the update has been called
TickerTape.prototype.update = function() {

	// We need to be able to handle a dataUrl with existing querystring parameters
	var concatCharacter = this.dataUrl.indexOf('?') > -1 ? '&' : '?';
	var urlWithParams = this.dataUrl + concatCharacter + "lastId=" + this.lastId;

	// Make a call to the server, passing through a function
	// which will be called when the update is complete
	var xhr = new XMLHttpRequest();

	// Set up a callback function
	xhr.onreadystatechange = this.updateCallback.simpleBind(this, xhr);

	// Make the request
	xhr.open("GET", urlWithParams);
	xhr.send("");
}


// The server should return an array of objects that we can use
// to form an item on the tape.
TickerTape.prototype.updateCallback = function(e) {

	// Only run this if the XHR has finished loading
	if (e.readyState != 4) {
		return;
	}

	// Probably should swap this call to eval for something safer?
	var json = eval(e.responseText);

	// Remember the number returned in this request so we can use it elsewhere
	this.numberReturned = json.length;

	// Now loop through all the returned items and build HTML from them
	for(var i = 0; i < this.numberReturned; i++) {

		// Produces HTML like this:
		// <li><p>Title</p><p class="tickerLink"><a href="Url">LinkText</a></p>
		var listItem = document.createElement('li');
		var title = document.createElement('p');
		var anchorHolder = document.createElement('p');
		var anchor = document.createElement('a');

		title.innerHTML = json[i].Title;
		//anchor.href = json[i].Url; Descomente para que exista o Link
		anchor.innerHTML = json[i].LinkText;
		anchorHolder.className = 'tickerLink';

		anchorHolder.appendChild(anchor);
		listItem.appendChild(title);
		listItem.appendChild(anchorHolder);

		// Add the built item to the document
		this.container.appendChild(listItem);

		// Track the Id of the items which are added
		// so that we can send it back to the server
		// on the next update.
		this.lastId = json[i].Id;
	}
}


// Pauses a scroll if it is currently taking place.
TickerTape.prototype.pauseScroll = function() {

	if(this.scrollIntervalId) {
		window.clearInterval(this.scrollIntervalId);
		this.scrollIntervalId = null;
		this.isScrollPaused = true;
		this.currentChild--;
	}
}


// 
TickerTape.prototype.resumeScroll = function() {

	this.isScrollPaused = false;
}


// Scrolls the innerContainer by an amount determined by the current element height.
TickerTape.prototype.scroll = function() {

	// Do not scroll if paused, or if another scroll is taking place
	if(!this.isScrollPaused && !this.scrollIntervalId) {

		// Find the element we are about to scroll and compute its top and bottom margins
		var element = this.container.childNodes[this.currentChild];

		// Amount to scroll will be zero unless we are resuming after a pause.
		// If resuming, we do not want to recalculate the amount to scroll, instead we
		// need to start from where we left off before the pause
		if(this.amountToScroll == 0) {
			this.amountToScroll = this.horizontal ? this.getElementWidth(element) : this.getElementHeight(element);
		}

		// "Save" the current context so it can be used in the setInterval callback
		var context = this;

		// Begin the scroll
		this.scrollIntervalId = window.setInterval(function() {

			context.totalScroll++;
			context.amountToScroll--;

			if(!context.horizontal) {
				context.container.style.top = (-context.totalScroll) + 'px';
			} else {
				context.container.style.left = (-context.totalScroll) + 'px';
			}

			if(context.amountToScroll == 0) {
				window.clearInterval(context.scrollIntervalId);
				context.scrollIntervalId = null;
			}
		}, 20);

		// 
		this.currentChild++;

		// Since we've scrolled some elements we may need to load more
		// to ensure there are always items in the container.
		this.updateIfNecessary();
	}
}


// Only calls update if the currentChild has passed the update threshold.
TickerTape.prototype.updateIfNecessary = function() {
	var updateThreshold = Math.round(this.numberReturned / 2) - 1;
	var mod = this.currentChild % Math.round(this.numberReturned / 2);

	if(mod >= updateThreshold) {
		this.update();
	}
}


// Called when the TickerTape class is instantiated.
TickerTape.prototype.init = function() {
	this.createDom();
	this.update();

	var timeoutCallback = this.scroll.simpleBind(this);
	window.setInterval(function() { timeoutCallback(); }, this.scrollInterval);
}


// Computes the height including top and bottom margins of an element
TickerTape.prototype.getElementHeight = function(element) {

	var height = element.offsetHeight;
	var topMargin = 0;
	var bottomMargin = 0;

	if (element.currentStyle) {
		topMargin		= element.currentStyle['marginTop'];
		bottomMargin	= element.currentStyle['marginBottom'];
	} else if (window.getComputedStyle) {
		topMargin = document.defaultView.getComputedStyle(element,null).getPropertyValue('margin-top');
		bottomMargin = document.defaultView.getComputedStyle(element,null).getPropertyValue('margin-bottom');
	}
	
	var isSafari = false;
	
	if(navigator.vendor && navigator.vendor.indexOf('Apple') > -1) {
		isSafari = true;
	}
	
	if(!isSafari) {
		topMargin = topMargin.replace('px', '');
		bottomMargin = bottomMargin.replace('px', '');
	}

	if(topMargin == 'auto') topMargin = 0;
	if(bottomMargin == 'auto') bottomMargin = 0;

	return parseFloat(height) + parseFloat(topMargin) + parseFloat(bottomMargin);
}


// Computes the height including top and bottom margins of an element
TickerTape.prototype.getElementWidth = function(element) {

	var height = element.offsetWidth;
	var leftMargin = 0;
	var rightMargin = 0;

	if (element.currentStyle) {
		leftMargin	= element.currentStyle['marginLeft'];
		rightMargin	= element.currentStyle['marginRight'];
	} else if (window.getComputedStyle) {
		leftMargin = document.defaultView.getComputedStyle(element,null).getPropertyValue('margin-left');
		rightMargin = document.defaultView.getComputedStyle(element,null).getPropertyValue('margin-right');
	}
	
	var isSafari = false;
	
	if(navigator.vendor && navigator.vendor.indexOf('Apple') > -1) {
		isSafari = true;
	}
	
	if(!isSafari) {
		leftMargin = leftMargin.replace('px', '');
		rightMargin = rightMargin.replace('px', '');
	}

	if(leftMargin == 'auto') leftMargin = 0;
	if(rightMargin == 'auto') rightMargin = 0;

	return parseFloat(height) + parseFloat(leftMargin) + parseFloat(rightMargin);
}


// Simple version of the Prototype library's bind() which will only work in
// this case, but doing it this way removes the need for Prototype's $A support.
Function.prototype.simpleBind = function() {

	var	__method = this;
	var args =	[arguments[1]];
	var object =	arguments[0];

	return function() {
		return __method.apply(object, args);
	}
}


// Cross browser way of getting XMLHttpRequest from Jonathan Snook, see:
// http://snook.ca/archives/javascript/short_xmlhttprequest_abstraction/
/*@cc_on
@if (@_jscript_version >= 5 && @_jscript_version < 5.7)
  function XMLHttpRequest() {
    try{
      return new ActiveXObject('Msxml2.XMLHTTP');
      }catch(e){}
  }
@end
@*/


var xb =
{
	evtHash: [],

	ieGetUniqueID: function(_elem)
	{
		if (_elem === window) { return 'theWindow'; }
		else if (_elem === document) { return 'theDocument'; }
		else { return _elem.uniqueID; }
	},

	addEvent: function(_elem, _evtName, _fn, _useCapture)
	{
		if (typeof _elem.addEventListener != 'undefined')
		{
			if (_evtName == 'mouseenter')
				{ _elem.addEventListener('mouseover', xb.mouseEnter(_fn), _useCapture); }
			else if (_evtName == 'mouseleave')
				{ _elem.addEventListener('mouseout', xb.mouseEnter(_fn), _useCapture); } 
			else
				{ _elem.addEventListener(_evtName, _fn, _useCapture); }
		}
		else if (typeof _elem.attachEvent != 'undefined')
		{
			var key = '{FNKEY::obj_' + xb.ieGetUniqueID(_elem) + '::evt_' + _evtName + '::fn_' + _fn + '}';
			var f = xb.evtHash[key];
			if (typeof f != 'undefined')
				{ return; }
			
			f = function()
			{
				_fn.call(_elem);
			};
		
			xb.evtHash[key] = f;
			_elem.attachEvent('on' + _evtName, f);
	
			// attach unload event to the window to clean up possibly IE memory leaks
			window.attachEvent('onunload', function()
			{
				_elem.detachEvent('on' + _evtName, f);
			});
		
			key = null;
			//f = null;   /* DON'T null this out, or we won't be able to detach it */
		}
		else
			{ _elem['on' + _evtName] = _fn; }
	},	

	removeEvent: function(_elem, _evtName, _fn, _useCapture)
	{
		if (typeof _elem.removeEventListener != 'undefined')
			{ _elem.removeEventListener(_evtName, _fn, _useCapture); }
		else if (typeof _elem.detachEvent != 'undefined')
		{
			var key = '{FNKEY::obj_' + xb.ieGetUniqueID(_elem) + '::evt' + _evtName + '::fn_' + _fn + '}';
			var f = xb.evtHash[key];
			if (typeof f != 'undefined')
			{
				_elem.detachEvent('on' + _evtName, f);
				delete xb.evtHash[key];
			}
		
			key = null;
			//f = null;   /* DON'T null this out, or we won't be able to detach it */
		}
	},
	
	mouseEnter: function(_pFn)
	{
		return function(_evt)
		{
			var relTarget = _evt.relatedTarget;				
			if (this == relTarget || xb.isAChildOf(this, relTarget))
				{ return; }

			_pFn.call(this, _evt);
		}
	},
	
	isAChildOf: function(_parent, _child)
	{
		if (_parent == _child) { return false };
		
		while (_child && _child != _parent)
			{ _child = _child.parentNode; }
		
		return _child == _parent;
	}	
};

/// FIM DA BIBLIOTECA TICKERTAPE