//Si el Explorador es...

//Firefox 2
if (navigator.userAgent.toLowerCase().indexOf('firefox/2') > -1)
document.write('<style type="text/css"> \
a, span, img {display:-moz-inline-box;} \
</style>');

//Internet Explorer 6
if (navigator.userAgent.toLowerCase().indexOf('ie 6') > -1)
document.write('<style type="text/css"> \
.banner {margin-top:24px;} \
#areaprivada {height:101px; padding-bottom:20px; z-index:200;} \
.bull {padding:0 8px 0 3px !important;} \
.recomendar-amigo a {margin:20px 0 0 0 !important;} \
#marcas-listado .marcas-side {top:-109px !important; left:0px;} \
#marcas-listado .marcas-side span {z-index:30 !important;} \
</style>');

//Internet Explorer 7
if (navigator.userAgent.toLowerCase().indexOf('ie 7') > -1)
document.write('<style type="text/css"> \
.banner {margin-top:24px;} \
#newsletter {padding-bottom:15px;} \
</style>');

//Internet Explorer 8
if (navigator.userAgent.toLowerCase().indexOf('ie 8') > -1)
document.write('<style type="text/css"> \
</style>');

//Safari
if (navigator.userAgent.toLowerCase().indexOf('safari') > -1)
document.write('<style type="text/css"> \
textarea {resize:none;} \
</style>');

//Google Chrome
if (navigator.userAgent.toLowerCase().indexOf('chrome') > -1)
document.write('<style type="text/css"> \
textarea {resize:none;} \
</style>');

//Opera
if (navigator.userAgent.toLowerCase().indexOf('opera') > -1)
document.write('<style type="text/css"> \
\
</style>');