Bueno, esta es mi solucion para tu problema, por cierto, olvidate de seguir usando Iframes, son buenos, pero en este caso que te dan un objeto ya creado no te sirven...
Ah y guardas este archivo como PHP (ejemplo: buscador.php)
Código HTML :
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-2" />
<title>Untitled Document</title>
<BASE HREF='http://www.metrocuadrado.com/micrositesPlus/crecer/'>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<SCRIPT LANGUAGE=JAVASCRIPT SRC="/js/validacionFormas.js"></SCRIPT>
<SCRIPT LANGUAGE=JAVASCRIPT SRC="/js/validators.js"></SCRIPT>
<SCRIPT LANGUAGE=JAVASCRIPT SRC="/js/demanda.js"></SCRIPT>
<SCRIPT LANGUAGE=JAVASCRIPT SRC="/js/funcionesMostrarInmuebles.js"></SCRIPT>
<SCRIPT LANGUAGE=JAVASCRIPT SRC="/js/microsites.js"></SCRIPT>
<SCRIPT LANGUAGE=JAVASCRIPT SRC="/js/validacionesOferta.js"></SCRIPT>
<SCRIPT LANGUAGE=JAVASCRIPT SRC="/js/ofertaGenerales.js"></SCRIPT>
<SCRIPT LANGUAGE=JAVASCRIPT SRC="/js/modulosNegocios.js"></SCRIPT>
<script LANGUAGE=JAVASCRIPT SRC="/js/microsites.js"></SCRIPT>
<style type="text/css">
<!--
body {
margin: 0 0 0 0;
}
#objetoFlash{
margin: 0 auto;
width:908px;
height:118px;
}
-->
</style></head>
<body>
<div id="objetoFlash">
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="980" height="118">
<param name="movie" value="http://www.dimaginet.com/GIC/cabezoteIndex.swf" />
<param name="quality" value="high" />
<param name="wmode" value="transparent" />
<embed wmode="transparent" src="http://www.dimaginet.com/GIC/cabezoteIndex.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="980" height="118"></embed>
</object>
</div>
<div id="buscador">
<table width="940" height="100" border="0" align="center" cellpadding="0" cellspacing="0" bgcolor="#EE8900">
<tr>
<td align="center" valign="middle">
<table width="930" height="40px"border="0" cellspacing="0" cellpadding="0">
<form action="/servlet/co.com.m2.servlet.demanda.BuscarInmueblesSolr" method="post" name="laForma" id="laForma" onSubmit="return validarBusquedaBasicaNegocios(this)">
<input type="hidden" name="tipoBusqueda" value="Basica" />
<input type="hidden" name="seVende" value="N" />
<input type="hidden" name="seArrienda" value="N" />
<input type="hidden" name="visitorId" value="210724" />
<input type="hidden" name="usuario" value="crecer" />
<input type="hidden" name="ptl" value="3" />
<input type="hidden" value="2" name="idTipoBusqueda"/>
<input type="hidden" value="S" name="clearParameters"/>
<input type="hidden" value="S" name="esMicrositio"/>
<input type="hidden" value="S" name="esPlus"/>
<tr>
<td><p style="font-family:Arial, Helvetica, sans-serif; font-size:20px; color:#FFF; text-align:left; font-weight:bold">Buscar Inmueble:</p></td>
<td align="center" valign="middle"><select name="idCiudad" style="width:153px; margin:0; padding:0;"onchange="deshabilitarZonasNegocios(this.form);">
<option value="-1" selected="selected">Seleccione ciudad</option>
<option value="1">Bogotá D.C.</option>
<option value="6">Bucaramanga</option>
<option value="4">Cali</option>
<option value="5287">Carmen De Apicala</option>
<option value="5380">Chinauta</option>
<option value="65">Chía</option>
<option value="5460">El Rosal</option>
<option value="5295">Flandes</option>
<option value="4880">Fusagasuga</option>
<option value="76">Girardot</option>
<option value="67">La Calera</option>
<option value="5033">Mapiripan</option>
<option value="5303">Mariquita</option>
<option value="4905">Nilo</option>
<option value="5348">Palmira</option>
<option value="4920">Ricaurte</option>
<option value="4925">Sasaima</option>
<option value="75">Tabio</option>
<option value="74">Tenjo</option>
<option value="4944">Ubate</option>
<option value="16">Villavicencio</option>
</select></td>
<td align="center" valign="middle"><select name="idSector" style="width:153px; margin:0; padding:0;">
<option selected="selected">Seleccione zona</option>
<option value="27,28">Centro</option>
<option value="6,7,8">Chapinero</option>
<option value="9,10,11,12,13,14">Noroccidente</option>
<option value="1,2,3,4,5">Norte</option>
<option value="15,16,17,18,19,20,21,22,24,25">Occidental</option>
<option value="23,26,29,30,31">Sur</option>
</select></td>
<td align="center" valign="middle"><select name="idTipoInmueble" style="width:153px; margin:0; padding:0;">
<option value="1" selected="selected">Apartamentos</option>
<option value="2">Casas</option>
<option value="3">Oficinas</option>
<option value="6">Locales</option>
<option value="8">Bodegas</option>
<option value="4">Lotes</option>
<option value="7">Fincas</option>
</select></td>
<td align="center" valign="middle"><span class="textobuscar">
<input name="idTipoNegocio" type="radio" value="1" checked="checked"/>
</span><span style="font-family:Verdana, Geneva, sans-serif; font-size:11px; color:#FFF; text-align:left">Compra
<input name="idTipoNegocio" type="radio" value="2" />
Arriendo</span></td>
<td align="right"><input type="image" src="img/btn_buscar.jpg" width="84" height="19" /></td>
</tr>
</form>
</table>
<table width="930" border="0" cellspacing="0" cellpadding="0">
<form name="formaBuscarCodigo" method="post" action="/servlet/co.com.m2.servlet.demanda.MostrarInmuebleModuloNegocio" onSubmit="return validarBusquedaCodigoNegocios(this)">
<input type="hidden" name="usuario" value="crecer">
<input type="hidden" name="busquedaCodigo" value="S">
<input type="hidden" name="ptl" value="3">
<tr>
<td width="176" align="right" valign="middle"><span style="font-family:Arial, Helvetica, sans-serif; font-size:16px; color:#FFF; text-align:right; font-weight:bold; margin:0 15px 0 0; padding:0;">Buscar por Código:</span></td>
<td width="175" align="center"><span class="codigogv">
<input name="idInmueble" style="width:150px; margin:0; padding:0;"onfocus="javascript:borrarBuscarNegocios(this)"/>
</span></td>
<td width="159" align="left"><input type="image" src="img/btn_buscar.jpg" alt="" width="84" height="19" /></td>
<td width="119"> </td>
<td width="150"> </td>
<td width="151"> </td>
</tr>
</form>
</table>
</td>
</tr>
</table>
</div>
<script language="javascript">
<!--
var s_pageName="Buscar - GRUPO INMOBILIARIO CRECER LTDA - Buscador";
var s_channel="Buscar - GRUPO INMOBILIARIO CRECER LTDA ";
var s_prop4="moduloNegocios";
-->
</script>
<script language="javascript" src="/js/s_code_remote.js"></script>
</body>
</html>
Puedes verlo funcionando aqui:
Código HTML :
http://localhost/Probando%20Curvas/untitled.php