// JavaScript Document

// ativar o slide da pagina (ex: slide de eventos)
function showSlide() {
  var currentPosition = 0;
  var slideWidth = 560;
  var slides = $('.slide');
  var numberOfSlides = slides.length;

  // Remove scrollbar in JS
  $('#slidesContainer').css('overflow', 'hidden');

  // Wrap all .slides with #slideInner div
  slides
	.wrapAll('<div id="slideInner"></div>')
    // Float left to display horizontally, readjust .slides width
	.css({
      'float' : 'left',
      'width' : slideWidth
    });

  // Set #slideInner width equal to total width of all slides
  $('#slideInner').css('width', slideWidth * numberOfSlides);

  // Insert controls in the DOM
  $('#slideshow')
    .prepend('<span class="control" id="leftControl">Clicking moves left</span>')
    .append('<span class="control" id="rightControl">Clicking moves right</span>');

  // Hide left arrow control on first load
  manageControls(currentPosition);

  // Create event listeners for .controls clicks
  $('.control')
    .bind('click', function(){
    // Determine new position
	currentPosition = ($(this).attr('id')=='rightControl') ? currentPosition+1 : currentPosition-1;
    
	// Hide / show controls
    manageControls(currentPosition);
    // Move slideInner using margin-left
    $('#slideInner').animate({
      'marginLeft' : slideWidth*(-currentPosition)
    });
  });

  // manageControls: Hides and Shows controls depending on currentPosition
  function manageControls(position){
    // Hide left arrow if position is first slide
	if(position==0){ $('#leftControl').hide() } else{ $('#leftControl').show() }
	// Hide right arrow if position is last slide
    if(position==numberOfSlides-1){ $('#rightControl').hide() } else{ $('#rightControl').show() }
  }		
}

// fazer link no objeto
function linkBanner(obj) {
	
	// faz o efeito no ponteiro do mouse quando esta sobre o objeto
	$(obj).hover(function(){
		if ($(this).attr('endereco') != '') {
	 		$(this).css('cursor','pointer');
	 	};
	 }, function() {
	 		$(this).css('cursor','auto');
	});
	
	// atribui o evento click do objeto
	$(obj).click(function(){
		var endereco = $(this).attr('endereco');
		var novaPagina = $(this).attr('np');
		if (endereco != '') {
			if (novaPagina == 'S') {
				window.open(endereco);
			} else {
				location.href = endereco;
			}
		}
	});	
}