'bottom' Example
<html><head> <style> #secL { position:absolute; } .style1 { bottom:100px!important; } .style2 { bottom:auto!important; } </style> </head> <body> <img id="myL" src="http://www.java2s.com/style/logo.png" width="79" height="99" onClick="this.className='style2';return false" onMouseOver="this.className='style1'" style="position:absolute; cursor:hand; z-index=5"> Move mouse here and click </body> </html>