Probá con esto:
Código HTML:
/***********************************************
* IFrame SSI script II- © Dynamic Drive DHTML code library (http://www.dynamicdrive.com)
* Visit DynamicDrive.com for hundreds of original DHTML scripts
* This notice must stay intact for legal use
***********************************************/
//Input the IDs of the IFRAMES you wish to dynamically resize to match its content height:
//Separate each ID with a comma. Examples: ["myframe1", "myframe2"] or ["myframe"] or [] for none:
var iframeids=["contenido"]
//Should script hide iframe from browsers that don't support this script (non IE5+/NS6+ browsers. Recommended):
var iframehide="yes"
var getFFVersion=navigator.userAgent.substring(navigator.userAgent.indexOf("Firefox")).split("/")[1]
var FFextraHeight=getFFVersion>=0.1? 16 : 0 //extra height in px to add to iframe in FireFox 1.0+ browsers
function resizeCaller() {
var dyniframe=new Array()
for (i=0; i<iframeids.length; i++){
if (document.getElementById)
resizeIframe(iframeids[i])
//reveal iframe for lower end browsers? (see var above):
if ((document.all || document.getElementById) && iframehide=="no"){
var tempobj=document.all? document.all[iframeids[i]] : document.getElementById(iframeids[i])
tempobj.style.display="block"
}
}
}
function resizeIframe(frameid){
var currentfr=document.getElementById(frameid)
if (currentfr && !window.opera){
currentfr.style.display="block"
if (currentfr.contentDocument && currentfr.contentDocument.body.offsetHeight) //ns6 syntax
currentfr.height = currentfr.contentDocument.body.offsetHeight+FFextraHeight;
else if (currentfr.Document && currentfr.Document.body.scrollHeight) //ie5+ syntax
currentfr.height = currentfr.Document.body.scrollHeight;
if (currentfr.addEventListener)
currentfr.addEventListener("load", readjustIframe, false)
else if (currentfr.attachEvent){
currentfr.detachEvent("onload", readjustIframe) // Bug fix line
currentfr.attachEvent("onload", readjustIframe)
}
}
}
function readjustIframe(loadevt) {
var crossevt=(window.event)? event : loadevt
var iframeroot=(crossevt.currentTarget)? crossevt.currentTarget : crossevt.srcElement
if (iframeroot)
resizeIframe(iframeroot.id);
}
function loadintoIframe(iframeid, url){
if (document.getElementById)
document.getElementById(iframeid).src=url
}
if (window.addEventListener) {
window.addEventListener("load", resizeCaller, false);
}
else if (window.attachEvent) {
window.attachEvent("onload", resizeCaller);
}
else {
window.onload=resizeCaller;
}
function popWindows(url,newWindows,pResizable,pScrollbars,pMenuBar,pToolBar,pStatus,pWidth,pHeight){
newWindows=window.open(url,newWindows,"resizable="+ pResizable +",scrollbars="+ pScrollbars +",menubar="+ pMenuBar +",toolbar="+ pToolBar +",status="+ pStatus +",width=" + pWidth + ",height=" + pHeight)
}
//funcion para enviar la variable recibida como parametro al swf
function setSWF(varSwf, contVarSwf) {
//chequeo si el objeto de flash existe..
if (window.document.menuswf) {
//envio la variable a flash en el _root.
window.document.menuswf.SetVariable(varSwf, contVarSwf);
}
}
// Chequeo destino y si tiene "http" (o sea algo que no es movistar) alpiste
destino = FORM_DATA['destino'];
if (destino) {
if ( destino.indexOf("http") != -1 ) {
destino = '';
}
}
//alert(destino);
-->
</script> Dentro del tag <body> pone esto:
Código HTML:
onLoad="javascript:loadintoIframe('contenido', destino ? destino : 'tu_pagina');
Espero te sirva....
nota: por si acaso, podes verlo funcionar en
www.movistar.com.ar