El problema esta en el firefox en el explorer si funk; saludos gracias x la respuesta
Código HTML:
<style type="text/css"> div.fixedHeaderTable { position: relative; } div.fixedHeaderTable table { width:100%; } div.fixedHeaderTable tbody { height: 200px; overflow-y: auto; overflow-x: hidden; } div.fixedHeaderTable table th { background-color:#CCCCCC;font-weight:bold } div.fixedHeaderTable table td { background-color:#EEEEEE } div.fixedHeaderTable thead td, div.fixedHeaderTable thead th { position:relative; } /* IE7 hacks */ div.fixedHeaderTable { *position: relative; *height: 200px; *overflow-y: scroll; *overflow-x: hidden; *padding-right:16px; } div.fixedHeaderTable thead tr { *position: relative; _position: absolute; *top: expression(this.offsetParent.scrollTop-2); *background:none; background-color:#FFFFFF } div.fixedHeaderTable tbody { *height: auto; *position:absolute; *top:50px; } /* IE6 hacks */ div.fixedHeaderTable { _width:expression(this.offsetParent.clientWidth-20); _overflow: auto; _overflow-y: scroll; _overflow-x: hidden; } div.fixedHeaderTable thead tr { _position: relative } </style> <div class="fixedHeaderTable"> <table> <thead> <tr><th>uno</th><th>dos</th><th>tres</th></tr> </thead> <tbody> <tr><td>aaaa</td><td>bbbb</td><td>cccc</td></tr> <tr><td>aaaa</td><td>bbbb</td><td>cccc</td></tr> <tr><td>aaaa</td><td>bbbb</td><td>cccc</td></tr> <tr><td>aaaa</td><td>bbbb</td><td>cccc</td></tr> </tbody> </table> </div>