// JavaScript Document

/* ----- zoom ---- */



	function getPageSize() {

		var xScroll, yScroll;

		if (window.innerHeight && window.scrollMaxY){

			xScroll = document.body.scrollWidth;

			yScroll = window.innerHeight + window.scrollMaxY;

		} else if (document.body.scrollHeight > document.body.offsetHeight){

			xScroll = document.body.scrollWidth;

			yScroll = document.body.scrollHeight;

		} else {

			xScroll = document.body.offsetWidth;

			yScroll = document.body.offsetHeight;

		}

		var windowWidth, windowHeight;

		if (self.innerHeight) {

			windowWidth = self.innerWidth;

			windowHeight = self.innerHeight;

		} else if (document.documentElement && document.documentElement.clientHeight) {

			windowWidth = document.documentElement.clientWidth;

			windowHeight = document.documentElement.clientHeight;

		} else if (document.body) {

			windowWidth = document.body.clientWidth;

			windowHeight = document.body.clientHeight;

		}	

		if(yScroll < windowHeight) pageHeight = windowHeight;

		else pageHeight = yScroll;

		if(xScroll < windowWidth) pageWidth = windowWidth;

		else pageWidth = xScroll;

		arrayPageSize = {pageWidth:pageWidth,pageHeight:pageHeight,windowWidth:windowWidth,windowHeight:windowHeight}

		return arrayPageSize;

	}

	

	function getPageScroll(){

		var yScroll;

		if (self.pageYOffset) yScroll = self.pageYOffset;

		else if (document.documentElement && document.documentElement.scrollTop) yScroll = document.documentElement.scrollTop;

		else if (document.body) yScroll = document.body.scrollTop;

		arrayPageScroll = {yScroll:yScroll};

		return arrayPageScroll;

	}



 	function initZoom(div) {

		var container = document.getElementById(div);	

		var lnks = container.getElementsByTagName('a');

		for(var i=0,len=lnks.length;i<len;i++) {

			if(lnks[i].className.indexOf('linkZoom') > -1) {

				lnks[i].onclick = function() {

					openZoom(this);

					return false;

				}

			}

		}

	}

	

	function closeZoom(obj) {

		document.body.removeChild(document.getElementById('zoom'));

		document.body.removeChild(document.getElementById('sombra'));

		obj.parentNode.parentNode.parentNode.removeChild(obj.parentNode.parentNode);

	}

	

	function resizeZoom(obj) {

		var largura = obj.width;

		var altura = obj.height;

		var box = obj.parentNode.parentNode;

		var pageSize = getPageSize();

		var pageScroll = getPageScroll();

		var boxTop = pageScroll.yScroll + ((pageSize.windowHeight - altura - 26) / 2);

		var boxLeft = ((pageSize.pageWidth - largura - 40) / 2);

		box.style.top = (boxTop < 0) ? "0px" : boxTop + "px";

		box.style.left = (boxLeft < 0) ? "0px" : boxLeft + "px";

		box.style.visibility = 'visible';

		try {

			var divZoom = document.getElementById('zoom_'+obj.className);

			var divDescricao = document.getElementById('desc_'+obj.className);

			if(divZoom) divZoom.style.width = largura + 'px';

			if(divDescricao) divDescricao.style.width = largura + 'px';

		} catch(erro) {}

	}

	

	function openZoom(obj) {

		var pageSize = getPageSize();

		var fonte = '';

		var descricao = '';

		var classe = 'abc';

		var divs = obj.parentNode.getElementsByTagName('div');

		for(var i=0,len=divs.length;i<len;i++) {

			if(divs[i].className.indexOf('fonte') > -1) fonte = divs[i].innerHTML;

			if(divs[i].className.indexOf('descricao') > -1) descricao = divs[i].innerHTML;

		}

		var divContainer = document.createElement('div');

		divContainer.id = 'zoom';

		divContainer.className = 'zoom';

		divContainer.style.height = (pageSize.pageHeight + 'px');

		var divSombra = document.createElement('div');

		divSombra.id = 'sombra';

		divSombra.className = 'sombra';

		divSombra.style.height = (pageSize.pageHeight + 'px');

		document.body.appendChild(divSombra);

		var divZoom = document.createElement('div');

		divZoom.id = 'zoom_' +  classe;

		divZoom.className = 'fotoZoom';

		var spanFonte = document.createElement('span');

		spanFonte.className = 'fonte';

		spanFonte.innerHTML = fonte;

		var imgZoom = document.createElement('img');

		imgZoom.id = 'img_' +  classe;

		imgZoom.className = classe;

		imgZoom.src = obj.href;

		imgZoom.alt = 'Foto';

		var divDescricao = document.createElement('div');

		divDescricao.id = 'desc_' +  classe;

		divDescricao.className = 'descricao';

		var p = document.createElement('p');

		p.innerHTML = descricao;

		var divFechar = document.createElement('div');

		divFechar.className = 'fechar';

		var aFechar = document.createElement('a');

		aFechar.title = 'fechar';

		aFechar.innerHTML = 'fechar';

		aFechar.href = '#';

		aFechar.onclick = function() {

			closeZoom(this);

			return false;

		}

		divDescricao.appendChild(imgZoom);

		divFechar.appendChild(aFechar);

		divDescricao.appendChild(p);

		divZoom.appendChild(divFechar);

		divZoom.appendChild(spanFonte);

		divZoom.appendChild(divDescricao);

		divContainer.appendChild(divZoom);		

		document.body.appendChild(divContainer);

		if(imgZoom.width && imgZoom.width > 56) {

		 resizeZoom(imgZoom);

		}

		imgZoom.onload = function() {

		  resizeZoom(this);

		  return false;

		}	

	}

						

/* --------- */