function init() {
      document.body.style.background  = "black url('img/fondo3.jpg') top center no-repeat";
      setPNGs();
    }

    /* pngs */
    function setPNGs() {
      if (document.getElementById) {
        var infoAbcn = document.getElementById("info_abcn");
        var imgAbcn = document.getElementById("img_abcn");
        var infoAbilbo = document.getElementById("info_abilbo");
        var imgAbilbo = document.getElementById("img_abilbo");
        var infoPsw = document.getElementById("info_psw");
        var imgPsw = document.getElementById("img_psw");

        var imgAdd = document.getElementById("logo_add");

        var frase = document.getElementById("frase_add");
        frase.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='img/texto_3_02.png')";

        infoAbcn.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='img/fondo_blanco_trans.png')";
        infoAbilbo.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='img/fondo_blanco_trans.png')";
        infoPsw.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='img/fondo_blanco_trans.png')";
        if ((version >= 5.5) && (version < 7) && (document.body.filters))
        {

           frase.src = "img/void.gif";
           frase.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='img/texto_3_02.png')";
           imgAbcn.src = "img/void.gif";
           imgAbcn.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='img/logo_abcn.png')";
           imgAbilbo.src = "img/void.gif";
           imgAbilbo.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='img/logo_abilbo.png')";
           imgPsw.src = "img/void.gif";
           imgPsw.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='img/logo_psw.png')";
           imgAdd.src = "img/void.gif";
           imgAdd.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true, sizingMethod=scale src='img/logo_add.png')";

        }
      }
    }