Question

Ok so I start coding websites (yes I know I am almost 15 years late :0) and in many of the sites I see the following javascript:

<script language="javascript"><!--

var wwOpenInstalled;
if (wwOpenInstalled || parent.wwOpenInstalled) {
    if (window.Event) {
        document.captureEvents (Event.MOUSEUP);
    }
    document.onmouseup = (parent.wwOpenInstalled) ? parent.wwOnMouseUp : wwOnMouseUp;
}
//--></script>

This is a very simple question. Why is it here and what does it do ?

Answer 1

Do you use WebWasher, or McAfee Web Protection? That looks like code inserted by webWasher to trap links and protect against viruses or trojans.