//window.onload=show;
function show(id) {
    var d = document.getElementById(id);
        for (var i = 1; i<=10; i++) {
            if (document.getElementById('smenu'+i)) {
                document.getElementById('smenu'+i).style.display='none';
            }
        }
    if (d) {
        d.style.visibility='visible';
        d.style.display='block';
    }
    
}
    
function cor(elem) {

    var cor1 = '#4d679b';
    document.getElementById(elem).style.backgroundColor=cor1;
    
}
function corAlt(elem, img) {

    document.getElementById(elem).style.backgroundImage="url('"+img+"')";
    
}
 
function anima (elem) {
    setTimeout("corAlt('"+elem+"', 'imagens/titulo2c.png')",30);
    setTimeout("corAlt('"+elem+"', 'imagens/titulo2b.png')",180);
    setTimeout("corAlt('"+elem+"', 'imagens/titulo2a.png')",310);
    setTimeout("corAlt('"+elem+"', 'imagens/titulo2.png')",400);
/*  
    setTimeout("corAlt('"+elem+"', '#4d679b')",70);
    setTimeout("corAlt('"+elem+"', '#3d577b')",180);
    setTimeout("corAlt('"+elem+"', '#4d679b')",310);
    setTimeout("corAlt('"+elem+"', '#3d577b')",400);
    setTimeout("corAlt('"+elem+"', '#4d679b')",490);
    setTimeout("corAlt('"+elem+"', '#3d577b')",580);
    setTimeout("corAlt('"+elem+"', '#4d679b')",670);
    */
}

var theImages = new Array() 
theImages[0] = 'imagens/topo4a.jpg'
theImages[1] = 'imagens/topo4b.jpg'
theImages[2] = 'imagens/topo4c.jpg'
theImages[3] = 'imagens/topo4d.jpg'
theImages[4] = 'imagens/topo4e.jpg'
theImages[5] = 'imagens/topo4f.jpg'
theImages[6] = 'imagens/topo4g.jpg'
theImages[7] = 'imagens/topo4h.jpg'
theImages[8] = 'imagens/topo4i.jpg'
theImages[9] = 'imagens/topo4j.jpg'

var j = 0
var p = theImages.length;

var preBuffer = new Array()
for (i = 0; i < p; i++){
   preBuffer[i] = new Image()
   preBuffer[i].src = theImages[i]
}

var whichImage = Math.round(Math.random()*(p-1));

function trocaImagem(){
    document.getElementById("imagemtopo").style.backgroundImage="url('"+theImages[whichImage]+"')";
}