var PORTUGUES = 0;
var INGLES = 1;

var language;
var numImg = 4;
var random = Math.ceil(Math.random() * numImg);

function centralizaObjeto(id){
    centralizarHorizontal(id);
    centralizarVertical(id);
}

function centralizarHorizontal(id) {
    var obj = window.document.getElementById(id);
    var objWidth = parseInt(obj.scrollWidth);
    var winWidth = window.document.documentElement.scrollWidth;
    obj.style.left = (winWidth / 2) - (objWidth / 2);
}

function centralizarVertical(id) {
    var obj = window.document.getElementById(id);
    var objHeight = parseInt(obj.scrollHeight);
	var winHeight = window.document.documentElement.scrollHeight;
	obj.style.top = Math.floor(winHeight /2) - (objHeight / 2);
}

function menuAppendItem(id, itemText, onclick) {
    var menu = document.getElementById(id);
    var item = document.createElement("div");
    item.style.width = menu.scrollWidth;
    item.style.height = 20;
    item.style.position = "relative";
    item.style.left = "0px";
    item.className = "menuItem";
    item.name = "item" + menu.children.length;
    item.id = "item" + menu.children.length;
    item.onclick = onclick;
    item.innerText = itemText;
    item.onmouseover = "this.className = 'menuItemOver'";
    item.onmouseout = "this.className = 'menuItem'";
    menu.appendChild(item);
}

function fontNormal() {
    var divs = document.getElementsByTagName("div");
    for (i = 0; i < divs.length; i++) {
        divs[i].style.fontWeight = "normal";
    }
}

function marca(obj) {
    var menu;
    if (language == PORTUGUES) {
        menu = document.getElementById("menu").childNodes;
        for(i in menu) {
            if (menu[i].tagName == "A") {
                menu[i].className = "unselectedItem";
            }
        }
        obj.className = "selectedItem";
    } else {
        menu = document.getElementById("menu_e").childNodes;
        for(i in menu) {
            if (menu[i].tagName == "A") {
                menu[i].className = "unselectedItem";
            }
        }
        obj.className = "selectedItem";
    }
}

function inicio(obj) {

    if (navigator.appName != "Microsoft Internet Explorer")
        document.getElementById("linkInicio").onclick();
    else 
        document.getElementById("linkInicio").click();
        
    document.getElementById("intro").style.display = 'none';
    document.getElementById("main").style.display = 'block';
    language = PORTUGUES;
    
}

function setPortuguese() {

    document.getElementById("menu_e").style.display = "none";
    document.getElementById("menu").style.display = "";
    document.getElementById("br").className = "selectedLanguage";
    document.getElementById("usa").className = ""
    language = PORTUGUES;
        
}

function setEnglish() {

    document.getElementById("menu_e").style.display = "";
    document.getElementById("menu").style.display = "none";
    document.getElementById("br").className = "";
    document.getElementById("usa").className = "selectedLanguage"
    language = INGLES;
        
}

function marcaInicio() {

    if (language == PORTUGUES) {
        if (navigator.appName == "Microsoft Internet Explorer") {
            document.getElementById("linkInicio").onclick();
        } else { 
            document.getElementById("linkInicio").click();
        }
    } else {
        if (navigator.appName == "Microsoft Internet Explorer") {
            document.getElementById("linkHome").onclick();
        } else  {
            document.getElementById("linkHome").click();
        }
    }
}function blog() {	window.location="http://blog.henriquestein.com";}