It can't (or shouldn't) be done. The left mouse button is used for most
functions you carry out when navigating through a web site - not just your
web site but any site - clicking on links and buttons etc.
In any case, even if you didn't have a mouse, you can still copy and print
the content, using keyboard commands & shortcuts. Ctrl+P for example,
brings up the Print dialogue box.
Perhaps you mean "disable the *right-hand* mouse button"?
That is a futile effort also. Read the dozens of posts previously sent on
this group about this issue. Sure there are scripts that disable this
function, but there are also means of getting around those. Turning off
javascript completely, or disabling javascript for that particular function
(in browsers like Firefox, you can disable specifically, "no right click"
scripts without having to turn JS off completely) is once such work-around.
Some browsers ignore such no-right-click scripts period. Other browsers
don't have the same right-click-menu functions as IE (like copy/save picture
or view source (these options are available from the main menus anyway).
Once a page is loaded in a user's browser, the contents are already on their
hard disk. The user can search for the files(s) and open/copy them as they
wish.
