aora les traigo el codigo de un efecto de rayo en taxtos imagenes

<style type="text/css">  a.navbar:hover{color:red; font-weight:bold;background-image:url(http://i27.tinypic.com/52xls0.gif);} a:hover, a.redlink:hover, a.navbar:hover {background-image:url(http://i27.tinypic.com/52xls0.gif); text-decoration:none; border:0px solid;} a:hover img {background-image:url(http://i27.tinypic.com/52xls0.gif);filter:alpha(finishopacity=0, style=2); } </style> <div style="position:absolute;left:0px;top:0px;"></div>


copien y pegen por encima de la pagina