// script to automatically redirect to the iphone interface from any 
// small screen webkit browser (e.g. iPhone, iPod Touch, Palm Pre, Android, etc...)

// Check if we are on a small screen
function CheckForSmallScreen(minWidth, minHeight)
{
    return(window.screen.height < minHeight || window.screen.width < minWidth);
}

// Check if the browser userAgent string is AppleWebKit
function CheckForWebKitUA()
{
    return(navigator.userAgent.search(/AppleWebKit/i) != -1);
}

// Check if the URL already has /iphone in it
function CheckForIPhoneURL()
{
    return(window.location.pathname.toString().search(/^\/iphone/i) != -1);
}

// Switch to the iphone UI if we're a webkit browser, are not already the /iPhone URL and are on a small screen
function RedirectIfSmallWebKitBrowser()
{
    var parms = window.location.search;
    if (parms.search(/autoPhoneRedirect=no|stripiPhoneCookie=yes/i) != -1)
    {
        SM.util.setCookie("autoPhoneRedirect", "no", 1);
    }
    else if (parms.search(/autoPhoneRedirect=yes/i) != -1)
    {
        SM.util.setCookie("autoPhoneRedirect", "yes", 1);
    }
    // check to see if redirection has been turned off via cookie
    var value = "";
    value = SM.util.getCookie("autoPhoneRedirect");
    if (value != "no")
    {
        if (CheckForWebKitUA() && !CheckForIPhoneURL() && CheckForSmallScreen(600,600))
        {
            window.location.replace("/iphone");
        }
    }
}

RedirectIfSmallWebKitBrowser();