document.write('<div id="loading"><img src="../imagens/loading.gif" alt="Carregando" align="absmiddle" /> Carregando...</div>');

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(function() {
  document.getElementById("loading").style.display="none";
});
/*===== CSS
#loading {
 	width: 200px;
 	height: 100px;
 	background-color: #c0c0c0;
 	position: absolute;
 	left: 50%;
 	top: 50%;
 	margin-top: -50px;
 	margin-left: -100px;
 	text-align: center;
}
// Head
<script type="text/javascript" src="loadn.js"></script>
*/