// JavaScript Document
var divId, divCaminho, divLargura, divAltura;

//Função responsável por receber o id do iframe o caminho a largura e a altura
function RecebeVariaveis(id,caminho,largura,altura){
	divId      = id;
	divLargura = largura;
	divAltura  = altura;
	divCaminho = caminho;
}		

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){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}
	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	mudar();
}

function $(id){
	return document.getElementById( id );
}
function mudar(){
	//Pegando o centro da página
	var fLeft;
	fLeft = ((arrayPageSize[2]/2)-(divLargura/2));
	
		//ALTURA E LARGURA DO SCROOL 
		if (document.documentElement && document.documentElement.scrollTop)
		{  
			// Explorer 6 Strict
			yScroll = document.documentElement.scrollTop;
			//xScroll = document.documentElement.scrollLeft;
					 
		} else if (document.body){
				
			// Outros Explorers
			yScroll = document.body.scrollTop;
			//xScroll = document.body.scrollLeft;
		}
	
    $(''+divId+'').className='visivel';
	$(''+divId+'').style.top=""+(yScroll+30)+"px";
	$(''+divId+'').style.width=""+divLargura+"px";
	$(''+divId+'').style.height=""+divAltura+"px";
	$(''+divId+'').style.left=""+fLeft+"px";
	//document.getElementById("divId").innnerHtml="<iframe src=\""+divCaminho+"\" border=\"0\" scrolling=\"no\" height=\"100%\" width=\"100%\"></iframe>";
	//NESSE PONTO ESCREVE O IFRAME
	document.getElementById(''+divId+'').innerHTML="<span align=\"right\" style=\"cursor:pointer;\" onclick=\"removerOverlay();\"><img src=\"http://www.sitedegames.com/img/btfechar.jpg\" border=\"0\" /></span><iframe src=\""+divCaminho+"\" border=\"0\" scrolling=\"no\" height=\"100%\" width=\"100%\"></iframe>";//aqui imprime o conteudo
	//alert(divCaminho);
  }

function mudarInvisivel(){
   $(''+divId+'').className='invisivel';
}


function removerOverlay() {
	/**
	 * Acrescentei este alerta apenas para avisar que esta função foi chamada
	 */
	 //alert('Estou chamando a função removerOverlay() para removermos este overlay sobre o body.');
	 //clearInterval(timer);
	 
	  var bodyOverlay = document.getElementById('bodyOverlay');
	  if (bodyOverlay) {
		    document.getElementById(''+divId+'').innerHTML="";
		    bodyOverlay.parentNode.removeChild(bodyOverlay);
	  }
	  mudarInvisivel();
}

function bodyOverlay() {
	  var objBody = document.getElementsByTagName('body').item(0);
	  var sizesPage = getPageSize();
	  var bodyOverlay = document.createElement("div");
	  bodyOverlay.setAttribute('id','bodyOverlay');
	  bodyOverlay.onclick = function(){
	  	removerOverlay();		
	  }
	  bodyOverlay.style.height = (arrayPageSize[1]+30) + 'px'; // fundo com o tamanho total da página.
	  if (!document.getElementById('bodyOverlay')) {
		    objBody.insertBefore(bodyOverlay, objBody.firstChild);
	  }
	  /**
	   * Acrescentei isto aqui apenas para chamar a função removerOverlay
	   */
	//timer = window.setInterval('removerOverlay()',3000);
}