The href attribute of <a>
passes the script to the interpreter with the pseudo-protocol specifier "javascript:;
"
The script looks as follows:
<a href="javascript:;" onmouseover="document.title = 'This "link" leads nowhere.'; return true;" onmouseout="document.title = 'onmouseover Test'; return true;" onclick="alert('I said: \'It leads nowhere.\''); return true;" > A link?</a>