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How can i get the Flash real url in <object> by JavaScript?

The Flash movie is in the object, when the Flash movie is playing I check the element in Chrome, and the code is like this:
<object type="application/x-shockwave-flash" data="http://s2.pstatp.com/site/video/player.swf" width="100%" height="100%" id="vjs_video_3_Flash_api" name="vjs_video_3_Flash_api" class="vjs-tech">
<param name="movie" value="http://s2.pstatp.com/site/video/player.swf">
<param name="flashvars" value="readyFunction=videojs.Flash.onReady&eventProxyFunction=videojs.Flash.onEvent&errorEventProxyFunction=videojs.Flash.onError&autoplay=false&preload=auto&loop=false&muted=undefined&">
<param name="allowScriptAccess" value="always">
<param name="allowNetworking" value="all"><param name="wmode" value="opaque">
<param name="bgcolor" value="#000000">
</object>
I can't see the embed. Why can it play without the embed? Now I have got the <object> element by document.getElementsByTagName('object') in the Chrome console, but how can I get the Flash URL with JavaScript?

Something like this should work:
function getMovieUrl(obj) {
Array.prototype.forEach.call(obj.children, function(param) {
if (param.getAttribute('name') === 'movie') {
return param.geAttribute('value');
}
});
return null;
}

How to stop video in ie8 when hiding a div?

I have written some JavaScript that will display a video when someone clicks on a picture and then they can click on the "x" to close the video but the video continues to play in ie8 when hidden but stops with FireFox and Chrome. If anyone can tell me how to fix this by having the video stop when the "xbutton" image is clicked I'd greatly appreciate it I have been fighting with this for hours. This is what I have so for JavaScript:
function toggle(div_id) {
var el = document.getElementById(div_id);
if ( el.style.display == 'none' ) { el.style.display = 'block';}
else {el.style.display = 'none';} }
function blanket_size(popUpDivVar) {
var blanket = document.getElementById('blanket');
blanket_height = document.body.parentNode.scrollHeight;
blanket.style.height = blanket_height + 'px';
}
function popup(windowname) {
blanket_size(windowname);
toggle('blanket');
toggle(windowname);
}
and this is the html I am using. I am just using dreamweaver to add a .flv video file from my computer.
<div id="blanket" style="display:none;"></div>
<div id="popUpDiv" style="display:none;">
<a href="#popUpDiv" onclick="popup('popUpDiv')"><img
src="../New images/newxbtn-red.png" class ="xbutton" alt = "Close"/></a>
<p> Video Header</p>
<!--Dreamweaver video code starts here -->
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="622"
height="350" id="FLVPlayer">
<param name="movie" value="FLVPlayer_Progressive.swf" />
<param name="quality" value="high" />
<param name="wmode" value="opaque" />
<param name="scale" value="noscale" />
<param name="salign" value="lt" />
<param name="allowScriptAccess" value="always" />
<param name="FlashVars"
value="&MM_ComponentVersion=1&skinName=Halo_Skin_3&streamName=video/bf-
eng&autoPlay=true&autoRewind=false" />
<param name="swfversion" value="8,0,0,0" />
<!-- This param tag prompts users with Flash Player 6.0 r65 and higher to download
the latest version of Flash Player. Delete it if you don’t want users to see the
prompt. -->
<param name="expressinstall" value="Scripts/expressInstall.swf" />
<!-- Next object tag is for non-IE browsers. So hide it from IE using IECC. -->
<!--[if !IE]>-->
<object type="application/x-shockwave-flash" data="FLVPlayer_Progressive.swf"
width="622" height="350">
<!--<![endif]-->
<param name="quality" value="high" />
<param name="wmode" value="opaque" />
<param name="scale" value="noscale" />
<param name="salign" value="lt" />
<param name="allowScriptAccess" value="always" />
<param name="FlashVars"
value="&MM_ComponentVersion=1&skinName=Halo_Skin_3&streamName=video/bf-
eng&autoPlay=true&autoRewind=false" />
<param name="swfversion" value="8,0,0,0" />
<param name="expressinstall" value="Scripts/expressInstall.swf" />
<!-- The browser displays the following alternative content for users with Flash
Player
6.0 and older. -->'
<div>
<p><a href="http://www.adobe.com/go/getflashplayer"><img
src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif"
alt="Get Adobe Flash player" /></a></p>
</div>
<!--[if !IE]>-->
</object>
<!--<![endif]-->
</object>
<!-- Video Ends -->
</div>
<div class ="image">
<a href="#popUpDiv" onclick="popup('popUpDiv')">
<img src="img/farmers/Donahue_Beef.jpg" width="190" height="110" alt="Beef" />
<img src="../New images/playbtn.png" width="200" height="116" alt="Play" class =
"play"/></a>
</div>
Thanks again!

There may be a very easy way using jQuery. In my case I generated a flash embed div with object in it. With jQuery you can easily define a close button with the empty() function on click. This clears the content of the div and the video is no longer in the DOM.
$("#video a.close").click(function(){
$("#flashlayer").empty();
}

First, you'll have to listen for the click event on your xbutton element (which I recommend adding an ID to):
function listen(event, elem, func) {
if (elem.addEventListener) {
elem.addEventListener(event, func, false);
} else if (elem.attachEvent) {
elem.attachEvent(event, func);
}
}
listen('load', window, function() {
var xbutton = document.getElementById('xbutton');
var player = document.getElementById('FLVPlayer');
listen('click', xbutton, function(e) {
player.Stop();
e.preventDefault();
});
});
You can use the JavaScript method Stop() to stop your Flash video.

youtube's embeded video wont go behind other elements

I have a site that has YouTube's embedded video in it, my problem is, these videos don't obey the z-index rules. All the YouTube videos are displayed on top of all other elements. I tried
$('iframe','.video_container').attr('wmode','opaque');
$('iframe','.video_container').attr('z-index','1');
I found that the wmmode has to be changed to opaque, but isn't this for the old embedded videos??
How do i achieve this for both old embedded style videos and the new iframes??
Edit:
Even this didn't work on old embedded videos
$('object','.video_container').append('<param name="wmode" value="opaque"></param>').find("embed").attr('wmode', 'opaque');
this works on iframe videos
var src=$('iframe','.video_container').attr('src');
if(src.indexOf('?')==-1)
{
src=src+'?wmode=transparent';
}
else
{
src=src+'&wmode=transparent';
}
$('iframe','.video_container').attr('src',src);
but i still haven't found a way for old embed videos
This is the resultant code after manipulating using js that doesn't work
<object width="320" height="240">
<param name="movie" value="http://www.youtube.com/v/-SNytfkJD4U?version=3&hl=en_US&rel=0"/>
<param name="allowFullScreen" value="true"/>
<param name="allowscriptaccess" value="always"/>
<embed src="http://www.youtube.com/v/-SNytfkJD4U?version=3&hl=en_US&rel=0" type="application/x-shockwave-flash" width="320" height="240" allowscriptaccess="always" allowfullscreen="true" wmode="opaque"/>
<param name="wmode" value="opaque"/>
</object>

just alter your iframe src like this
http://www.youtube.com/embed/UUeRCDyVspR2M?wmode=transparent
so the flashplayer served by google will render like you told em with that parameter :)
you simply have to add ?wmode=transparent to the params or do it like this
http://www.youtube.com/embed/UUeRCDyVspR2M?param1=bla&param2=foo&and_so_on=more&wmode=transparent
so you simply have to append
&wmode=transparent
to the end of the url

<script type="text/javascript">
var googleFooYou_tube = function(){
var objs = document.getElementsByTagName('object');
var length = objs.length;
for(var i=0; i<length; i++){
if(objs[i].className == 'video_container'){
var param = document.createElement('param');
param.name='wmode';
param.value='transparent';
var origEmbed = objs[i].getElementsByTagName('embed')[0];
var newEmbed = '<embed wmode="transparent" src="'+origEmbed.src+'" type="application/x-shockwave-flash" width="425" height="349" allowscriptaccess="always" allowfullscreen="true">';
objs[i].appendChild(param);
objs[i].removeChild(origEmbed);
objs[i].innerHTML=objs[i].innerHTML+newEmbed;
}
}
}
</script>
and your html code so far
<object width="425" height="349" class="video_container">
<embed src="http://www.youtube.com/v/-SNytfkJD4U?version=3&hl=en_US" type="application/x-shockwave-flash" width="425" height="349" allowscriptaccess="always" allowfullscreen="true"></embed>
<param name="movie" value="http://www.youtube.com/v/-SNytfkJD4U?version=3&hl=en_US"></param>
<param name="allowFullScreen" value="true"></param>
<param name="allowscriptaccess" value="always"></param>
</embed>
</object>
<script>googleFooYou_tube();</script> // added this at the bottom of your page
It's not usuable as it is... I mean the function... but you can alter it for your needs... and make it look more appealing if you want. It is just a quick and dirty approach and it works flawlessly.

You should add a param for wmode in the flash element which will be an object tag in your markup. Try to find the object element and try this
$('object','.video_container').append(
$("<param/>").attr({
'name': 'wmode',
'value': 'opaque'
})
).find("embed").attr('wmode', 'opaque');

JS + HTML, get src using javascript

lets say I have an image being displayed using the code:
<img src="image.png"/>
I would like to define the src using javascript, how would you do something like
<script>
function getImage ()
{
return "image.png";
}
</script>
<img src="Javascript:getImage()"/>
UPDATE:
I need it to work with the divx player, getting the video url paramater via javascript
<object classid="clsid:*************" width="320" height="260" codebase="http://go.divx.com/plugin/DivXBrowserPlugin.cab">
<param name="custommode" value="none" />
<param name="autoPlay" value="true" />
<param name="src" value="Javascript:GetURL()" />
<embed type="video/divx" src="Javascript:GetURL()" custommode="none" width="850" height="400" autoPlay="true" pluginspage="http://go.divx.com/plugin/download/">
</embed>
</object>
anyone have any ideas for this?

You should give your tags individual IDs, then do
src = 'image.png';
document.getElementById('param1').setAttribute('value', src);
document.getElementById('embed1').setAttribute('src', src);
<param id="param1" name="src" value="Javascript:GetURL()" />
<embed id="embed1" type="video/divx" src="Javascript:GetURL()" custommode="none" width="850" height="400" autoPlay="true" pluginspage="http://go.divx.com/plugin/download/">

You have to assign the image an ID, then use this:
document.getElementById('img_id').src="new_image.jpg";

You can dynamically write in the embed code with the video URL with document.write(), but you should only do this when the page loads.

Javascript to flash via ExternalInterface

I'm wondering if someone could look over my code. I'm trying to pass a dummy variable from javascript to actionscript 3 with the following code:
HTML:
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
id="music_player" width="500" height="375"
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab">
<param name="movie" value="music_player.swf" />
<param name="quality" value="high" />
<param name="bgcolor" value="#869ca7" />
<param name="allowScriptAccess" value="always" />
<embed src="music_player.swf" quality="high" bgcolor="#869ca7"
width="500" height="375" name="music_player" align="middle"
play="true" loop="false" quality="high" allowScriptAccess="always"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/go/getflashplayer">
</embed>
</object>
Javascript:
var nextTrackLocation = "dummyString";
getFlashMovie("music_player").jsAlert(nextTrackLocation);
function getFlashMovie(movieName) {
var isIE = navigator.appName.indexOf("Microsoft") != -1;
return (isIE) ? window[movieName] : document[movieName]; }
and the actionscript:
ExternalInterface.addCallback("getNextTrack", jsAlert);
function jsAlert(mess){
ExternalInterface.call("alert", mess);
}
Does anyone see a mistake?

Your question is very confusing. I think you are making two mistakes here.
From Javascript you're trying to call a function in Actionscript called "jsAlert" but the function is in Actionscript exposed as "getNextTrack". I think it should be:
getFlashMovie("music_player").getNextTrack(nextTrackLocation);
Second, where you define the function in Actionscript you overlooked that the ExternalInterface.addCallback actually takes three parameters.
ExternalInterface.addCallback("getNextTrack", null, jsAlert);