//Si el Explorador es...

//Firefox 2
if (navigator.userAgent.indexOf("Firefox") > -1)
document.write('<style type="text/css"> \
</style>');

//Internet Explorer 6
if (navigator.userAgent.toLowerCase().indexOf('ie 6') > -1)
document.write('<style type="text/css"> \
#nav ul li .prod-linea li {width:104px !important;} \
#nav ul li .prod-linea {width:104px !important;} \
#nav ul li .prod-linea a {width:92px !important;} \
#nav ul li .prod-uso li {width:100px !important;} \
#nav ul li .prod-uso {width:100px !important;} \
#nav ul li .prod-uso a {width:88px !important;} \
#nav ul li .area-priv {right:-1px; !important;} \
</style>');

//Internet Explorer 7
if (navigator.userAgent.toLowerCase().indexOf('ie 7') > -1)
document.write('<style type="text/css"> \
.bloque-gris .img img {width:124px; height:62px;} \
</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>');