var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;

if (checkIt('konqueror'))
{
    browser = "Konqueror";
    OS = "Linux";
}
else if (checkIt('safari')) browser = "Safari"
else if (checkIt('omniweb')) browser = "OmniWeb"
else if (checkIt('opera')) browser = "Opera"
else if (checkIt('webtv')) browser = "WebTV";
else if (checkIt('chrome')) browser = "Chrome"
else if (checkIt('msie')) browser = "Internet Explorer"
else if (!checkIt('compatible'))
{
    browser = "Netscape Navigator"
    version = detect.charAt(8);
}
else browser = "An unknown browser";

if (!version) version = detect.charAt(place + thestring.length);

if (!OS)
{
    if (checkIt('linux')) OS = "Linux";
    else if (checkIt('x11')) OS = "Unix";
    else if (checkIt('mac')) OS = "Mac"
    else if (checkIt('win')) OS = "Windows"
    else OS = "an unknown operating system";
}

function checkIt(string)
{
    place = detect.indexOf(string) + 1;
    thestring = string;
    return place;
}

if ((browser == "Safari") || (browser == "Chrome"))
{
 //alert("coucou Safari");
 document.body.style.backgroundImage='url(/boutique_homme/themes/homwear/img/bg_principal_webkit.png)';
}