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How to Add a Warning when Navigating to an External Website?

Hello everyone,
I am working on a website for a client. I am editing their current site that was build by someone else so I am still "learning the code".

Basically, my client wants it so that when a user clicks on a link on the site that takes them AWAY from the company's site, it displays a warning message notifying the user that they are leaving the site.

I know this is extremely annoying, but thats what my client wants. Does anyone know how I can add something like this so it happens "automatically", meaning, I don't have to create a special page for every external link.

Is there a way for some type of PHP script of something to detect when a user clicks a link to an external site it displays the message?

Thanks!

ASKER CERTIFIED SOLUTION

basicinstinct

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Anuroopsundd

http://stackoverflow.com/questions/2365994/display-a-warning-when-leaving-the-site-not-just-the-page

Zyloch

Observe that you will need JavaScript in order to display the confirmation message, so you may as well do the entire thing in JavaScript.

For example,

window.onload = function()
{
    for (var i = 0; i < document.links.length; i++)
    {
        var lnk = document.links[i];
        if (lnk.href.indexOf(window.location.hostname) === -1)
        {
            lnk.onclick = function()
            {
                return confirm("Are you sure you want to leave?");
            };
        }
    }
};

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basicinstinct

i made a start for you... runs in chrome on linux that's all i checked...

http://jsfiddle.net/6NXyD/5/

(function(){
    var container = document.getElementById("container");
    if(container.addEventListener)
    {
        container.addEventListener("click", clickEvent, false);
    }
    else
    {
        container.attachEvent("onclick", clickEvent);
    }
    
    function clickEvent($event)
    {
        $event = $event || self.event;
        var element = $event.target || $event.srcElement;
        
        while(element)
        {
            if(/^a$/i.test(element.tagName))
            {
                if(element.href.indexOf(window.location.origin) !== 0)
                {
                    if(!confirm("really want to go away?"))
                    {
                        if($event.preventDefault)
                        {
                            $event.preventDefault();
                        }
                        else
                        {
                            $event.returnValue = false;
                        }
                    }
                };
                break;
            }
            element = element.parentNode;
        }
    }
})();
¿

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