function abrir_ventana(){

var ventana=document.getElementById("ventana");

ventana.style.visibility='visible';

var pie=document.getElementById("pie").offsetTop;

ventana.style.height=pie+90;



}
function cerrar_ventana(){

var ventana=document.getElementById("ventana");

ventana.style.visibility='hidden';


}

function cargar_flash(){

var flash=document.getElementById("peliculaflash");

flash.innerHTML="<OBJECT classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0' WIDTH='987' HEIGHT='158' id='cabecera' ALIGN='center'><PARAM NAME=movie VALUE='cabecera.swf'><PARAM NAME=salign VALUE='CT'><PARAM NAME=quality VALUE=high><PARAM NAME=scale VALUE=noscale><PARAM NAME=bgcolor VALUE=#FFFFFF><EMBED src='cabecera.swf' quality=high scale=noscale  bgcolor=#FFFFFF  WIDTH='987' HEIGHT='158' NAME='cabecera' SALIGN='CT' TYPE='application/x-shockwave-flash' PLUGINSPAGE='http://www.macromedia.com/go/getflashplayer'></EMBED></OBJECT>"
}