function vIE(){return (navigator.appName=='Microsoft Internet Explorer')?parseFloat((new RegExp("MSIE ([0-9]{1,}[.0-9]{0,})")).exec(navigator.userAgent)[1]):-1;}
function mostrarPagina()
{
    var explorer = vIE();
    if(explorer >= 0 && explorer <= 6){
        var img = document.getElementById('preloader').getElementsByTagName('img')[0];
        document.getElementById('preloader').removeChild(img);
        document.getElementById('preloader').innerHTML = "Su explorador ha quedado obsoleto";
        return;
    }
    document.getElementById('preloader').style.display = 'none';
    document.body.style.background = 'url(images/FondoHAY.jpg) repeat-y top center';
    var divs = document.body.getElementsByTagName('div');
    for(var i = 0; i < divs.length; i++){
        if(divs[i].id != ""){
            divs[i].style.visibility = 'visible';
        }
    }
}
if(window.addEventListener) window.addEventListener('load', mostrarPagina, false);
else window.attachEvent('onload', mostrarPagina);