Possible Answers

1. <A HREF="javascript:void(0)" onclick="document.bgColor='#99CCFF'">Link</A>
   

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2. <A HREF="javascript:void(0)" onclick="document.bgColor='#99CCFF';alert('I am an alert box')">Link</A>
   

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3. <A HREF="javascript:void(0)" onclick="document.bgColor='#FF0000'" onmouseout="document.bgColor='#FFFFEE'">Link</A>
   

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4. <A HREF="javascript:void(0)" onclick="window.open()">Link</A>
   

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