postion:relative not works in ie9

[dagger]

Demo\[code\]<div style="overflow:scroll;height:120px;"><table id="table" width="100%"> <tr style="position:relative;background-color:#1b72a4;"> <td>fff </td> <td>fff </td> <td>fff </td> <td>fff </td> <td>fff </td> <td>fff </td> </tr> <tr> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> </tr> <tr> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> </tr> <tr> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> </tr> <tr> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> </tr> <tr> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> </tr> <tr> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> </tr> <tr> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> <td>data </td> </tr></table></div>\[/code\]// i m fixing first row..so that i have given style to first row style="position:relative;"but above style only works in ie 7 .I have to fix first row in all versions of ie what should i do.(