Save file from server cache in WebUI

Question

Hello,
maybe someone here can help me with this obscure problem, that bothers me for quite some time now:
I want to save a pdf file from an internal table to the clients harddrive. Everything is implemented as in Thomas Jung's BLOG(forgot the link) on getting the table in the server cache and I do have my working download URL.
Now for the difficult stuff: I need to get the file to download correctly without freezing the application.
This are the ways I tried, but I always do end up with the loading icon in front of my page, not able to make any input. gv_download_url is my working URL, file is OK too when I open it on the hdd:
1.
  <iframe src="<%= gv_download_url%>" width="0" height="0" id="PDFDownload"
          name="PDFDownload" style="display:none">
  </iframe>
2.
<p>
  <object data="report.pdf" type="text/unicode" width="1" height="1">
    <param name="src" value="<%= gv_download_url %>">
    Ihr Browser kann das Objekt leider nicht anzeigen!
  </object>
</p>
3.
<script type="text/javascript">
function pageLoaded(){
var myFrame = document.createElement("iframe");
var src = document.createAttribute("src");
var height = document.createAttribute("height");
var width = document.createAttribute("width");
src.nodeValue = "<%= gv_download_url%>";
height.nodeValue = "600";
width.nodeValue = "800";
myFrame.setAttributeNode(src);
myFrame.setAttributeNode(height);
myFrame.setAttributeNode(width);
var output = document.getElementById("Bereich");
output.appendChild(myFrame);
document.close();
</script>
<div id="Bereich"/>
<iframe src="about:blank" onload="pageLoaded()" height="0" width="0"/>
The only working way I know is this one:
<script langugage="Javascript">
  var win = window.open("<%= gv_download_url%>");
</script>
But I always end up with an empty browser page open, whicht the user has to close manually.
<i>Short: URL is good, file data is good. How do I get the file download dialog without freezing WebUI?</i>
Any help would be highly appreciated. Thanks in advance.

Answer 1

Had the chance to test it in IC WebClient on CRM4.0 today. Everything works fine.
It seems to be really WebUI specific then. Suppose some missed JavaScript event, that triggers the "Please Wait"-Icon.