<script>
function cambio(cual)
{
if (document.getElementById(cual).style.display == 'none')
document.getElementById(cual).style.display = 'block'
else
document.getElementById(cual).style.display = 'none'
}
</script>
<table width="387" border="0" cellpadding="1" cellspacing="0">
<tr>
<td width="95>
<input type="submit" name="Submit" value="ver" onClick="cambio('Tester');"></td>
<td width="301"> </td>
</tr>
<tr>
<td colspan="2" class="texformsadmin">
<table width="387" border="0" cellpadding="0" cellspacing="0" id="Tester" style="display: none">
<tr>
<td width="95" class="texformsadmin">
<div align="right">
Cargar:
</div> </td>
<td width="301" >
<input name="txcarga" type="radio" value="_self" checked>
<span class="texformsadmin">Interno</span>
<input name="txcarga" type="radio" value="_blank">
<span class="texformsadmin">Externo</span> </td>
</tr>
</table>
</td>
</tr>
</table>