For normal three-button mice (that don't have the two side buttons), it's important to realize that the <b>right click</b> is a special button that can be changed to a modifier key, like shift or alt.

<p>This is because you rarely use it to click+drag.  It's only used for a quick-click-and-immediate-release.  That means we can easily change it into a "act only on release" button, which means we can check what happens between press and release, and if anything else happens, act on that instead.

<p>Some scripts that do this:
<ul>
<li><a href="http://www.autohotkey.com/forum/topic136.html">drag up for PgUp, drag down for PgDn</a>
<li><a href="http://www.autohotkey.com/forum/topic33712.html">simulating the scroll wheel</a>
<li><a href="http://www.autohotkey.com/forum/topic25330.html">generalized gestures</a>
<li><a href="http://www.autohotkey.com/forum/topic8357.html">detecting double clicks</a>
</ul>