Description: javascript: in many forms

<div>
 <a href="java
script:alert()">x</a>
 <a href="j a v a s c r i p t:alert()">x</a>
 <a href="jscript
:alert()">x</a>
</div>
----------
<div>
 <a href="">x</a>
 <a href="">x</a>
 <a href="">x</a>
</div>