// JavaScript Document
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 = new Array('',yScroll)
	return arrayPageScroll;
}
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 = new Array(pageWidth,pageHeight,windowWidth,windowHeight)
	return arrayPageSize;
}

function pause(numberMillis) {
	var now = new Date();
	var exitTime = now.getTime() + numberMillis;
	while (true) {
		now = new Date();
		if (now.getTime() > exitTime)
		return;
	}
}

function alerta(msg){
	var fundo=document.getElementById("fundo");
	var alertaJan=document.getElementById("alerta");
	var alertaMsg=document.getElementById("alertaMsg");
	alertaMsg.innerHTML=msg;
	alertaMsg.style.zIndex=1000;
	var arrayPageSize = getPageSize();
	var arrayPageScroll = getPageScroll();
	fundo.style.height = (arrayPageSize[1] + 'px');
	var msgW=250; // parseInt(alertaJan.style.width);	
	var msgH=200;	// parseInt(alertaJan.style.height);
	alertaJan.style.top=(arrayPageScroll[1] + ((arrayPageSize[3]-msgH)/2))+"px";
	alertaJan.style.left=(arrayPageScroll[0] + ((760-msgW)/2))+"px";
	showLayer("alerta");
	showLayer("fundo");
}

function ocultaAlerta(){
	hideLayer("alerta");
	hideLayer("fundo");
}