How to detect GoogleBar?
Detection of a googlebar is not that complicated, it can done with simple JavaScript code.
To detect google, you need to cut & paste following code INSIDE web pages <HEAD> tag
<object id="gbar" classid="clsid:00EF2092-6AC5-47c0-BD25-CF2D5D657FEB" style="display: none;"></object> <script TYPE="text/javascript" src="gbar.js"></script>
Besides that code, you need JavaScript file GoogleBar detection javascript saved to directory where your web page is. Here's link to Zipped version of GoogleBar detection javascript. Just unzip and save it where you want.
Still one more thing to do. You need to add small code to your web page <BODY> tag. Code to add is: onload="IsGoogleBar()". After adding code, your body tag might look something like:
<body onload="IsGoogleBar()">;
That's it. Now your page detects if googlebar is installed to Internet Explorer. Click here to see GoogleBar detection working.