Muchas gracias por tu respuesta y este es mi codigo
Código HTML:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Untitled Document</title>
<script language="text/javascript">
function mywindow(){
window.open('SearchCat.asp','Category','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=200,height=150');
/*var winl = (screen.width-w)/2;
var wint = (screen.height-h)/2;
var settings ='height='+h+',';
settings +='width='+w+',';
settings +='top='+wint+',';
settings +='left='+winl+',';
settings +='scrollbars='+scroll+',';
settings +='resizable=yes';
win=window.open(mypage,myname,settings);*/
//if(parseInt(navigator.appVersion) >= 4){win.window.focus();}
}
</script>
<style type="text/css">
<!--
#layeremp, #layeremp2, #layerb{display:none;}
.style3 {font-family: Geneva, Arial, Helvetica, sans-serif;
font-weight: bold;
}
.style4 {font-family: Geneva, Arial, Helvetica, sans-serif;
font-size: 9px;
}
.style2 {font-family:Tahoma; font-size:11px; font-weight:bold;}
.style5 {font-size:11px;}
-->
</style>
</head>
<body>
<p><strong><span class="style4"><a href="http://www.memosticker.com/Cpanel.asp">Panel de Control</a> >><a href="http://ads.memosticker.com/MyAds.asp"> Mis Clasificados</a></span></strong></p>
<p><span class="style3">Mis Clasificados :: Añadir Clasificado</span> <br>
<br>
</p>
<form action="" method="post" name="formcat" id="formcat">
<table width="480" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td width="199"><span class="style2">Tipo de clasificado
<input name="valcat" type="hidden" id="valcat" value=" ">
</span></td>
<td width="274" id="cellcat"> </td>
<td width="36"><button value="Button" type="button" style="cursor:hand;" onClick="window.open('SearchCat.asp','Category','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=210,height=130');document.getElementById('layeremp').style.display='none';document.getElementById('layeremp2').style.display='none';document.getElementById('layerb').style.display='none';document.getElementById('cellsubcat').innerHTML='';document.getElementById('cellcat').innerHTML='';document.formcat.valcat.value='';document.formcat.valsubcat.value='';"><img src="http://www.memosticker.com/Images/edit-find.png"></button></td>
</tr>
<tr>
<td><span class="style2">Subcategoria
<input name="valsubcat" type="hidden" id="valsubcat" value=" ">
</span></td>
<td id="cellsubcat"> </td>
<td><button value="Button" type="button" style="cursor:hand;" onClick="window.open('SearchSubCat.asp?valpass='+document.formcat.valcat.value,'Category','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=210,height=130');"><img src="http://www.memosticker.com/Images/edit-find.png"></button></td>
</tr>
<tr id="layeremp">
<td><span class="style2">Tipo de Cargo
<input name="valjob" type="hidden" id="valjob" value=" ">
</span></td>
<td id="celljob"> </td>
<td><button value="Button" type="button" style="cursor:hand;" onClick="window.open('SearchJobCat.asp','Job','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=210,height=130');"><img src="http://www.memosticker.com/Images/edit-find.png"></button></td>
</tr>
<tr id="layeremp2">
<td><span class="style2">Tipo de Empleo
<input name="valjob2" type="hidden" id="valjob2" value=" ">
</span></td>
<td> </td>
<td><button value="Button" type="button" style="cursor:hand;" onClick="window.open('SearchJobCat.asp,'Job','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=210,height=130');"><img src="http://www.memosticker.com/Images/edit-find.png"></button></td>
</tr>
<tr id="layerb">
<%set rsb=server.CreateObject("adodb.recordset")
sqlb="select * from level3"
set rsb=objConn.execute(sqlb)%>
<td><span class="style2">Tipo de Negocio </span></td>
<td><label>
<select name="cmbbusiness" class="style5" id="cmbbusiness">
<option value="0">:: Seleccione ::</option>
<%while not rsb.eof%>
<option value="<%=rsb("level3id")%>"><%=rsb("level3name")%></option>
<%rsb.movenext
wend%>
</select>
</label></td>
<td> </td>
</tr>
<tr>
<td><span class="style2">Titulo del Clasificado </span></td>
<td><label>
<input name="textfield" type="text" maxlength="50">
</label></td>
<td> </td>
</tr>
<tr>
<td><span class="style2">Descripción</span></td>
<td><label>
<textarea name="textarea" cols="35" rows="5"></textarea>
</label></td>
<td> </td>
</tr>
<tr>
<td><span class="style2">Duración</span></td>
<td><label>
<select name="select" class="style5">
<option value="0">:: Seleccione ::</option>
<option value="7">7 días</option>
<option value="15">15 días</option>
<option value="30">30 días</option>
</select>
</label></td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
</table>
<p> </p>
</form>
<p> </p>
</body>
</html>