The script:
<ul>
	<li> may call ScriptCookie() <b>during script initialization</b> and save the resulting cookie string
	<li> may use the cookie string to register to core application or librnd infrastructure that requires cookie, such as <act>CreateMenu</act>
	<li> can depend on the application to call any unregistering associated with this specific cookie atomatically after script unload (<act>preunload</act>).
</ul>
<p>
The function can not be called outside of script initialization. The cookie
string can be used any time between script load and script unload.