iframe auto height doesn't work properly on Firefox - javascript

I was looking for a solution for auto height adjusting depending on the contents that are inside the iframe, and this seems like it's working on chrome.
But for some reason, if i wait for the site to completely load, and then click on the 'Wall' tab on the main page, the iframe contents are not visible, as the height is set for '4px'.
Again, if you click on the wall tab while it's loading, or before it gets load, it works perfectly fine.
I'm guessing it has to do with the source.
The site I'm having problem with is here : http://xefrontier.com/
could anyone tell me why this phenomenon is happening?
and this is the source:
function resizeIframe(obj){
obj.style.height = 0;
obj.style.height = obj.contentWindow.document.body.scrollHeight + 'px';
}
function getDocHeight(doc) {
doc = doc || document;
// stackoverflow.com/questions/1145850/
var body = doc.body, html = doc.documentElement;
var height = Math.max( body.scrollHeight, body.offsetHeight,
html.clientHeight, html.scrollHeight, html.offsetHeight );
return height;
}
function setIframeHeight(id) {
var iframe_board = document.getElementById(id);
var doc = iframe_board.contentDocument? iframe_board.contentDocument:
iframe_board.contentWindow.document;
iframe_board.style.visibility = 'hidden';
iframe_board.style.height = "10px"; // reset to minimal height ...
// IE opt. for bing/msn needs a bit added or scrollbar appears
iframe_board.style.height = getDocHeight( doc ) + 4 + "px";
iframe_board.style.visibility = 'visible';
}
document.getElementById('iframe_board').onload = function() { // Adjust the Id accordingly
setIframeHeight(this.id);
}

Solution for OP's issue is as follows:
A function that interacts with iframes works in Chrome but not in Firefox.
STOP If there is ever a problem with Firefox and Chrome is ok with interacting with iframes, then consider if this occurs in a PC, Mac, or both.
Chances are it's going to be Mac and it's wonderful relationship with Firefox (note: sarcasm cannot not be expressed very well on keyboard).
If the problem is isolated to the Mac running Firefox, then you can do the following to fix it 88.4% of the time.
Locate any event handlers that are listening for the load event on iframes:
ex. <iframe src="domain.com" onload="eventHandler()"></iframe>
REMOVE=================^-------===THIS===------^.
Disable/remove them.
At the very end of your </script> block add this:
ex. window.onload = eventHandler;
NOTE ===================^=^ -DO NOT ADD () at the end of function
Firefox Mac has many different issues unique onto itself, some by design. One of those bugs is it's inability to acknowledge an iframe's existence after it's been loaded. Firefox Mac will deal with iframes after everything else has been loaded. This is just my observation from experience.

use the following code to resize iframe height
<script language="javascript" type="text/javascript">
function resizeIframe(obj) {
obj.style.height = (obj.contentWindow.document.body.scrollHeight) + 'px';
}
</script>
and in iframe tag
<iframe src="somepage.php" width="100%" frameborder="0" scrolling="no" onload="resizeIframe(this)"></iframe>

Related

How can I resize the iframe without page refresh?

I have some swf embedded in iframe but only if the page is refreshed the iframe is resized, then if I select other one then will show as all swf not only the animation the background as well. This is what I am using
if ( 'resizeIframe' === $('#onPlayAction').val() ) {
var ifrEl = $('div.player-container iframe.page-iframe')[0];
$(ifrEl).show();
ifrEl.src = htmlPageBrowserUri;
ifrEl.onload = function() {
ifrEl.width = ifrEl.contentWindow.document.body.scrollWidth;
ifrEl.height = ifrEl.contentWindow.document.body.scrollHeight;
}
}
There are three ways to do this.
You can change the size on every window resize
$(window).on('resize', function (){
ifrEl.width = ... ;
ifrEl.height = ... ;
})
You can use some jQuery plugins like iFrame Resizer
You can use some nifty css tricks. Go search for responsive iframes using css and you will find a ton of good answers.
I hope this all helps you.
I suspect the issue with your code might be thses two lines :
ifrEl.src = htmlPageBrowserUri;
ifrEl.onload = function() {
The problem being that the first line set s the frame address, but second line sets the onload event immediately, probably before the page has loaded ? So when the page does load, the line setting onload event has already run & so doens't get set.
I don't quite understand the text in your question (sorry!) but the code below successfully resizes an iframe - it's run 'onload' in the frame's page:
<body onload="setParent()">
In case it's relevant, the iframe itself has attributes:
<iframe id="neckfinishframe" style="width:100%;overflow-x:hidden" src=".. etc">
In my case I'm only concerned about height. Width is 100%.
In the iFrame page, this code runs from the onload event to amend the iframe height to be whatever the height of the page is, plus a bit. This is intended to avoid showing a set of scroll bars within the iframe.
function setParent() {
// runs onload in iframe page
// in my case I have to run it from the frame page because I need to know the page rendered height in order to set the iframe height
var f;
try {f = parent.getElementById("neckfinishframe")} catch (e) {};
if (f != null) f.style.height=(this.document.body.scrollHeight+30)+"px";
}
Note - I haven't tried this cross- browser but I know it works in IE.

cross domain iframe resize for firefox 3.6.10

Is there any way to resize a cross domain iframe according to its content, that would work in Firefox 3.6.10?
I thought that the postMessage command works, but a solution I found works in Firefox 12 but not in Firefox 3.6.10. Or maybe that's not the problem.
As I wrote in another question, youtube seems to be just embedding the content of the iframe in the page for the comment section, that's how it gets resized dynamically. And this would basically solve every iframe issue too, since the HTML would be embedded in the website's local HTML, and no same origin policy would block anything. When I asked about this, I didn't get answers though.
So thank you in advance, or if you don't like when people say that, I would be grateful if someone would helped.
And I CAN control the content inside the frame too!
(I need this for a script that makes youtube look like around 2012, so more people could be grateful too.)
You might try looking at this on GitHub.
https://github.com/davidjbradshaw/iframe-resizer
solution i found/modified:
in the page which contains the iframe:
<script type="text/javascript">
function resizeCrossDomainIframe(id, other_domain) {
var iframe = document.getElementById(id);
window.addEventListener('message', function(event) {
if (event.origin !== other_domain) return;
if (isNaN(event.data)) return;
var height = parseInt(event.data) + 32;
iframe.height = height + "px";
}, false);
}
in the iframe code:
<iframe id="my_iframe" onload="resizeCrossDomainIframe('my_iframe', '**whatever domain your iframe content is on**');"></iframe>
for continuous resizing, i put this in the page containing the iframe:
<script>
var interval = setInterval(function(){
resizeCrossDomainIframe('my_iframe', '**whatever domain your iframe content is on**');
}, 100);
</script>
on the iframe content page:
<script>
window.onload = function() {
window.parent.postMessage(document.body.scrollHeight, '**whatever domain your iframe containing page is on**');
}
</script>
and this for continuous resizing:
<script>
var interval2 = setInterval(function(){
window.parent.postMessage(document.body.scrollHeight, '**whatever domain your iframe containing page is on**');
}, 100);
</script>
CORRECTION: the first interval script isnt needed, since the eventlistener executes the function every time a message is sent to it. it would just cause slowness

change iframe height according to content

iframe tag:
<iframe scrolling="no" style="height: 956px; width: 100%" frameborder="0" id="ampcontentiframe"></iframe>
i am trying to resize iframe height on content load.i tried other solutions from:
Link1
Link2
Link3
But none of them solved my problem.i tried calling resize function on window load as well as iframe load.but the height it sets every time is different(sometimes actual content height and sometimes original height of iframe).
Any help guys.....??
FYI:I also tried by removing scrolling attr from iframe.but it didn't work
This is one of those problems that really is harder than it should be. Here are the things you need to consider, in order to keep an iFrame sized correctly.
Working out an accurate height
Getting an accurate height for the iFrame is not as simple as it should be, as you have a choice of six different properties that you can check and none of them give a constantly right answer. The best solution I've come up with is this function that works so long as you don't use CSS to overflow the body tag.
function getIFrameHeight(){
function getComputedBodyStyle(prop) {
return parseInt(
document.defaultView.getComputedStyle(document.body, null),
10
);
}
return document.body.offsetHeight +
getComputedBodyStyle('marginTop') +
getComputedBodyStyle('marginBottom');
}
This is the IE9 version, for the much long IE8 version see this answer.
If you do overflow the body and you can't fix your code to stop this, then using either the offsetHeight or scrollHeight properties of document.documentElement are your best options. Both have pros and cons and it best just to test both and see which works for you.
PostMessage
The postMessage API provides a simple method for comunicating between an iFrame and it's parent.
To send a message to the parent page you call it as follows.
parent.postMessage('Hello parent','http://origin-domain.com');
In the other direction we can send the message to the iFrame with the following code.
var iframe = document.querySelector('iframe');
iframe.contentWindow.postMessage('Hello my child', 'http://remote-domain.com:8080');
To recevie a message create an event listerner for the message event.
function receiveMessage(event)
{
if (event.origin !== "http://remote-domain.com:8080")
return;
console.log(event.data);
}
if ('addEventListener' in window){
window.addEventListener('message', receiveMessage, false);
} else if ('attachEvent' in window){ //IE
window.attachEvent('onmessage', receiveMessage);
These examples uses the origin property to limit where the message is sent to and to check where it came from. It is possible to specify * to allow sending to any domain and you may in some cases you may want to accept messages from any domain. However, if you do this you need to consider the security implications and implement your own checks on the incoming message to ensure it contains what your expecting. In this case the iframe can post it's height to '*', as we might have more than one parent domain. However, it's a good idea to check incoming messages are from the iFrame.
function isMessageFromIFrame(event,iframe){
var
origin = event.origin,
src = iframe.src;
if ((''+origin !== 'null') && (origin !== src.substr(0,origin.length))) {
throw new Error(
'Unexpect message received from: ' + origin +
' for ' + iframe.id + '. Message was: ' + event.data
);
}
return true;
}
MutationObserver
The other advance in more modern broswers is MutationObserver which allows you to watch for changes in the DOM; so it is now possible to detect changes that could effect the size of the iFrame without having to constantly poll with setInterval.
function createMutationObserver(){
var
target = document.querySelector('body'),
config = {
attributes : true,
attributeOldValue : false,
characterData : true,
characterDataOldValue : false,
childList : true,
subtree : true
},
observer = new MutationObserver(function(mutations) {
parent.postMessage('[iframeResize]'+document.body.offsetHeight,'*');
});
log('Setup MutationObserver');
observer.observe(target, config);
}
var MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
if (MutationObserver){
createMutationObserver();
}
Other issues
Other things to consider include, having more than one iFrame on the page, CSS :Checkbox and :Hover events causing page resize, avoiding the use of height auto in the iFrames' body and html tags and lastly the window being resized.
IFrame Resizer Library
I've wrapped all this up in a simple dependancy free library, that also provides some extra functions not discussed here.
https://github.com/davidjbradshaw/iframe-resizer
This works with IE8+.
You can try with the following script.
<script type="text/javascript">
function iframeLoaded() {
var iFrameID = document.getElementById('your_frame_id');
if(iFrameID) {
iFrameID.height = "";
iFrameID.height = iFrameID.contentWindow.document.body.scrollHeight + "px";
}
}
</script>
and add onload function to your iframe like
<iframe onload="iframeLoaded()">
Try with this if you want to scroll bar for iframe
<iframe style="height: 956px;overflow-y:scroll; width: 100%" frameborder="0" id="ampcontentiframe"></iframe>
just put "min-height" and add "overflow-y" prop as scroll it will work
or if you dont want to scroll then try like
<iframe scrolling="no" style="min-height: 956px; width: 100%" frameborder="0" id="ampcontentiframe"></iframe>

iframe Auto Adjust Height as content changes

I have an iframe as you can see on the following link;-
http://one2onecars.com
The iframe is the online booking in the centre of the screen. The problem I have is that although the height of the iframe is okay as the page loads, I need it to somehow auto adjust the height as the page content adjusts. For example, if I do a postcode search in the online booking it creates a dropdown menu and then makes the 'Next Step' button not viewable.
What I need to happen is that when the content of the online booking changes, the iframe auto adjusts to the new height of the iframe (dynamically) as it is not loading any other pages.
I have tried several different scripts using jquery to try resolving this issue, but they all only seem to auto adjust the height of the iframe when the page first loads and not as the contents of the iframe changes.
Is this even possible to do?
The code I have at the moment is with a set height at the moment:-
<div id="main-online-booking">
<iframe id="main-online-frame" class="booking-dimensions" src="http://www.marandy.com/one2oneob/login-guest.php" scrolling="no" frameborder="0"></iframe>
</div>
#main-online-booking {
height: 488px;
border-bottom: 6px #939393 solid;
border-left: 6px #939393 solid;
border-right: 6px #939393 solid;
z-index: 4;
background-color: #fff;
}
.booking-dimensions {
width: 620px;
height: 488px;
}
If anybody can help me with this I would be much appreciated!
setInterval
The only (corrected due to advances in browser tech, see David Bradshaw's answer) backwards compatible way to achieve this with an iframe is to use setInterval and keep an eye on the iframe's content yourself. When it changes its height, you update the size of the iframe. There is no such event you can listen out for that will make it easy unfortunately.
A basic example, this will only work if the iframe content that has changed in size is part of the main page flow. If the elements are floated or positioned then you will have to target them specifically to look for height changes.
jQuery(function($){
var lastHeight = 0, curHeight = 0, $frame = $('iframe:eq(0)');
setInterval(function(){
curHeight = $frame.contents().find('body').height();
if ( curHeight != lastHeight ) {
$frame.css('height', (lastHeight = curHeight) + 'px' );
}
},500);
});
Obviously depending on what you want you can modify the perspective of this code so that it works from the iframe, on itself, rather than expecting to be part of the main page.
cross-domain issue
The problem you will find is that due to browser security it wont let you access the content of the iframe if it is on a different host to the main page, so there isn't actually anything you can do unless you have a way of adding any script to the html that appears in the iframe.
ajax
Some others are suggesting trying to use the third-party service via AJAX, unless the service supports this method it will be very unlikely you'll be able to get it to work -- especially if it is a booking service that will most likely need to operate over https/ssl.
As it appears you have full control over the iframe content, you have full options open to you, AJAX with JSONP would be an option. However, one word of warning. If your booking system is multistepped you need to make sure you have a well designed UI -- and possibly some history/fragment management code -- if you are to go down the AJAX route. All because you can never tell when a user will decide to navigate forward or back in their browser (which an iframe would automatically handle, within reason). A well designed UI can detract users from doing this.
cross-domain communication
If you have control of both sides (which it sounds like you do) you also have the cross domain communication option using window.postMessage - see here for more information https://developer.mozilla.org/en-US/docs/DOM/window.postMessage
Modern browser and in part IE8 have some new features that make this task easier than it use to be.
PostMessage
The postMessage API provides a simple method for comunicating between an iFrame and it's parent.
To send a message to the parent page you call it as follows.
parent.postMessage('Hello parent','http://origin-domain.com');
In the other direction we can send the message to the iFrame with the following code.
var iframe = document.querySelector('iframe');
iframe.contentWindow.postMessage('Hello my child', 'http://remote-domain.com:8080');
To recevie a message create an event listerner for the message event.
function receiveMessage(event)
{
if (event.origin !== "http://remote-domain.com:8080")
return;
console.log(event.data);
}
if ('addEventListener' in window){
window.addEventListener('message', receiveMessage, false);
} else if ('attachEvent' in window){ //IE
window.attachEvent('onmessage', receiveMessage);
These examples uses the origin property to limit where the message is sent to and to check where it came from. It is possible to specify * to allow sending to any domain and you may in some cases you may want to accept messages from any domain. However, if you do this you need to consider the security implications and implement your own checks on the incoming message to ensure it contains what your expecting. In this case the iframe can post it's height to '*', as we might have more than one parent domain. However, it's a good idea to check incoming messages are from the iFrame.
function isMessageFromIFrame(event,iframe){
var
origin = event.origin,
src = iframe.src;
if ((''+origin !== 'null') && (origin !== src.substr(0,origin.length))) {
throw new Error(
'Unexpect message received from: ' + origin +
' for ' + iframe.id + '. Message was: ' + event.data
);
}
return true;
}
MutationObserver
The other advance in more modern broswers is MutationObserver which allows you to watch for changes in the DOM; so it is now possible to detect changes that could effect the size of the iFrame without having to constantly poll with setInterval.
function createMutationObserver(){
var
target = document.querySelector('body'),
config = {
attributes : true,
attributeOldValue : false,
characterData : true,
characterDataOldValue : false,
childList : true,
subtree : true
},
observer = new MutationObserver(function(mutations) {
parent.postMessage('[iframeResize]'+document.body.offsetHeight,'*');
});
log('Setup MutationObserver');
observer.observe(target, config);
}
var MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
if (MutationObserver){
createMutationObserver();
}
Working out an accurate height
Getting an accurate height for the iFrame is not as simple as it should be, as you have a choice of six different properties that you can check and none of them give a constantly right answer. The best solution I've come up with is this function that works so long as you don't use CSS to overflow the body tag.
function getIFrameHeight(){
function getComputedBodyStyle(prop) {
return parseInt(
document.defaultView.getComputedStyle(document.body, null),
10
);
}
return document.body.offsetHeight +
getComputedBodyStyle('marginTop') +
getComputedBodyStyle('marginBottom');
}
This is the IE9 version, for the much long IE8 version see this answer.
If you do overflow the body and you can't fix your code to stop this, then using either the offsetHeight or scrollHeight properties of document.documentElement are your best options. Both have pros and cons and it best just to test both and see which works for you.
Other issues
Other things to consider include, having more than one iFrame on the page, CSS :Checkbox and :Hover events causing page resize, avoiding the use of height auto in the iFrames' body and html tags and lastly the window being resized.
IFrame Resizer Library
I've wrapped all this up in a simple dependancy free library, that also provides some extra functions not discussed here.
https://github.com/davidjbradshaw/iframe-resizer
This works with IE8+.
I wrote this script and it's working perfectly for me. Feel free to use it!
function ResizeIframeFromParent(id) {
if (jQuery('#'+id).length > 0) {
var window = document.getElementById(id).contentWindow;
var prevheight = jQuery('#'+id).attr('height');
var newheight = Math.max( window.document.body.scrollHeight, window.document.body.offsetHeight, window.document.documentElement.clientHeight, window.document.documentElement.scrollHeight, window.document.documentElement.offsetHeight );
if (newheight != prevheight && newheight > 0) {
jQuery('#'+id).attr('height', newheight);
console.log("Adjusting iframe height for "+id+": " +prevheight+"px => "+newheight+"px");
}
}
}
You can call the function inside a loop:
<script>
jQuery(document).ready(function() {
// Try to change the iframe size every 2 seconds
setInterval(function() {
ResizeIframeFromParent('iframeid');
}, 2000);
});
</script>
ResizeObserver allows your code to remain encapsulated inside the iframe and decoupled from the outer scope (i.e., versus postMessage), and it is ligher weight than the general-purpose MutationObserver.
Simple example below (or good example at Mozilla):
const myElement = document.getElementById('my-element');
const resizeObserver = new ResizeObserver((entries) => {
const dims = myElement.getBoundingClientRect(); // or see Mozilla for `entries` example
console.log(`new height (${dims.height}) and width (${dims.width})`);
});
resizeObserver.observe(myElement);
use this script:
$(document).ready(function () {
// Set specific variable to represent all iframe tags.
var iFrames = document.getElementsByTagName('iframe');
// Resize heights.
function iResize() {
// Iterate through all iframes in the page.
for (var i = 0, j = iFrames.length; i < j; i++) {
// Set inline style to equal the body height of the iframed content.
iFrames[i].style.height = iFrames[i].contentWindow.document.body.offsetHeight + 'px';
}
}
// Check if browser is Safari or Opera.
if ($.browser.safari || $.browser.opera) {
// Start timer when loaded.
$('iframe').load(function () {
setTimeout(iResize, 0);
});
// Safari and Opera need a kick-start.
for (var i = 0, j = iFrames.length; i < j; i++) {
var iSource = iFrames[i].src;
iFrames[i].src = '';
iFrames[i].src = iSource;
}
} else {
// For other good browsers.
$('iframe').load(function () {
// Set inline style to equal the body height of the iframed content.
this.style.height = this.contentWindow.document.body.offsetHeight + 'px';
});
}
});
Note : use it on webserver.

IE 8 iframe border

There is a border showing on an iframe and I can't get rid of it.
IE 6 and 7 work as intended with a little JavaScript:
function test(){
var iframe = document.getElementById('frame2');
iframe.contentWindow.document.body.style.backgroundColor = "#a31d1d";
iframe.contentWindow.document.body.style.border = "#a31d1d";
iframe.contentWindow.document.body.style.outlineColor = "#a31d1d";
}
But the border remains visible in IE 8.
Add following attributes to iframe tag:
marginheight="0" marginwidth="0" frameborder="0"
I had the same problem with iframes created dynamically, and it turned out that setting border properties AFTER adding the iframe to the document has NO effect:
The following code shows a 3d border:
var iframe = document.createElement("IFRAME");
iframe.src = "http:www.stackoverflow.com";
//Iframe added BEFORE setting border properties.
document.body.appendChild(iframe);
iframe.frameBorder = "no";
But this actually removes it:
var iframe = document.createElement("IFRAME");
iframe.src = "http:www.stackoverflow.com";
iframe.frameBorder = "no";
//Iframe added AFTER setting border properties.
document.body.appendChild(iframe);
Hope that this would help solve your problem.
I tried loads of variations on this idea and ended up using something along these lines. Thought I'd share it.
<script type="text/javascript">
url = 'http://www.dollypower.com';
title = 'Dolly Power';
width = '660';
height = '430';
document.write('<iframe src='+url+' title='+title+' width='+width+' height='+height+' frameborder=0></iframe>');
</script>
Then I used noscript tags to enter an alternative for non-JS users, i.e:
<noscript><p>Please click here for Dolly Power</p></noscript>
I tested it in IE8 and it's all cool for me and it also validates.
Hope this might help someone out there!
Success!
Try this. It will find any iframe elements and remove their borders in IE and other browsers (though you can just set a style of "border : none;" in non-IE browsers instead of using JavaScript). AND it will work even if used AFTER the iframe is generated and in place in the document (e.g. iframes that are added in plain HTML and not JavaScript)!
This appears to work because IE creates the border, not on the iframe element as you'd expect, but on the CONTENT of the iframe--after the iframe is created in the BOM. ($#&*##!!! IE!!!)
Note: The IE part will only work (of course) if the parent window and iframe are from the SAME origin (same domain, port, protocol etc.). Otherwise the script will get "access denied" errors in the IE error console. If that happens, your only option is to set it before it is generated, as others have noted, or use the non-standard frameBorder="0" attribute. (or just let IE look fugly--my current favorite option ;) )
Took me MANY hours of working to the point of despair to figure this out...
Enjoy. :)
// =========================================================================
// Remove borders on iFrames
if (window.document.getElementsByTagName("iframe"))
{
var iFrameElements = window.document.getElementsByTagName("iframe");
for (var i = 0; i < iFrameElements.length; i++)
{
iFrameElements[i].frameBorder="0"; // For other browsers.
iFrameElements[i].setAttribute("frameBorder", "0"); // For other browsers (just a backup for the above).
iFrameElements[i].contentWindow.document.body.style.border="none"; // For IE.
}
}
Sample HTML to go with the sample JS would be helpful =)
Try using IE8's Developer Tools (press F12 on the page you have problems with) to isolate what styles are being applied to the iframe. You can also play with the styles there, to cut down your iteration time.
Keep in mind that this may be IE not respecting border settings in the css, whereas the traditional setting of the attribute BORDER=0 on the iframe element may work. Worth a test, at least.
Edit: It looks like what does fix the problem is setting frameborder='0' on the iframe element. That worked for me, at least.
If you want your code to validate you could do this with javascript. I found the perfect answer when I had this problem a few months ago here
var iframe = document.createElement("iframe");
iframe.src = "banner_728x90.gif";
iframe.width = "728";
iframe.height = "90";
iframe.frameBorder = "0";
iframe.scrolling = "no";
document.body.appendChild(iframe);
f you want to load another page seamless in the iframe you can do this if you copy and paste this code into the head of your page. I found it on a site with free scripts. The performance is good in most cases
function getDocHeight(doc) {
doc = doc || document;
var body = doc.body, html = doc.documentElement;
var height = Math.max( body.scrollHeight, body.offsetHeight, html.clientHeight, html.scrollHeight, html.offsetHeight );
return height;
}
function setIframeHeight(id) {
var ifrm = document.getElementById(id);
var doc = ifrm.contentDocument? ifrm.contentDocument: ifrm.contentWindow.document;
ifrm.style.visibility = 'hidden';
ifrm.style.height = "10px"; // reset to minimal height in case going from longer to shorter doc
ifrm.style.height = getDocHeight( doc ) + 10 + "px";
ifrm.style.visibility = 'visible';
}
You then give your iframe an id and call the script on load. This is how.
var iframe = document.createElement("iframe");
iframe.setAttribute('id', "ifrm1");
iframe.setAttribute('src', 'http://www.hekcmviw.com/'); // change the URL
iframe.setAttribute('width', '100%');
iframe.setAttribute('height', '10');
iframe.setAttribute('frameBorder', '0');
iframe.setAttribute('scrolling', 'no');
iframe.setAttribute('onload' ,"setIframeHeight(this.id)");
document.body.appendChild(iframe);

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