// JavaScript Document



// função para saber se o navegador suporta o XMLHTTP

function openAjax() {

	var ajax;

	try {

		ajax = new XMLHttpRequest();

	} catch(ee) {

		try {

			ajax = new ActiveXObject("Msxml2.XMLHTTP");

		} catch(e) {

			try {

				ajax = new ActiveXObject("Microsoft.XMLHTTP");

			} catch(E) {

				ajax = false;

			}

		}

	}

	return ajax;

}



window.onload = loadFunctions;



 function loadFunctions() {

                aumentaFundoCinza();

				aumentaFundo();	

            }





// Utilizada para evitar digitar o document.getElementById

function gE(ID){

	return document.getElementById(ID);

}



// Utilizada para evitar digitar o document.getElementsByTagName

function gEs(tag) {

	return document.getElementsByTagName(tag);

}



/* Funções de terceiros */

// getPageSize()

// Returns array with page width, height and window width, height

// Core code from - quirksmode.org

// Edit for Firefox by pHaez

//



function aumentaFundoCinza(){

	var div = gE('popFundo');

	

	if (div){

		var tamPag = getPageSize();

		var width = arrayPageSize[0];

		var height = arrayPageSize[1];

		

		div.style.width = width + 'px';

		div.style.height = height + 'px';

	}

}



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) 

}







// Função que valida o e-mail informado

function validaEmail(email){

	return email.search(/(\w[\w\.\+]+)@(.+)\.(\w+)$/)==0;

}





/* função para alterar o tamanho das fontes */

	var tam = 11;

	var lin = 1.5;

	function alterarTamanhoFonte(tipo, onde){

		

		var minimo = 7;

		var maximo = 20;

		vardomElement = gE(onde);

												  

		if( tipo == 'mais' ){

			if( tam < 16 ) tam += 2;

		}

		else{

			if( tam > 9 ) tam -= 2 ;

		}

		

		mudaFonte(tipo , document.getElementById(onde)) ;     

	}

	

	

	function mudaFonte( tipo , idM ){		

	  for( var i = 0 ; i < idM.childNodes.length ; i++ ){

		mudaFonte( tipo , idM.childNodes.item( i )  );

	  }

	  if( idM.style )

		idM.style.fontSize = tam+'px';

	}

	

/* função destinada a aumentar as lateria colocando um fundo branco na pagina */

function aumentaFundo(){

	var conteudo = gE('geral1');

	var rodape = gE('rodape');

	

	var tamPag = getPageSize();

	

	if (arrayPageSize[0] > 900){

		conteudo.style.width = '850px';

		rodape.style.width = '850px';

	}else{

		conteudo.style.width = '779px';

		rodape.style.width = '779px';

	}

}	

	

	

	// função para abrir pop-Up

	function abrePopUp(url, id, largura, altura){

		window.open(url, id, 'width='+largura+', height='+altura+', scrollbars=no');

	}