Acrobat window loses focus

[cactus1000]

I have a web page which dynamically creates PDFs. When the PDF is created, Acrobat launches in front of the browser window (using this code):

function Open_link_subwindow(Link_href)
{
var Link_subwindow = window.open('','linksubwindow','width=600, height=420, resizable, scrollbars, status, toolbar, menubar')
Link_subwindow.location = Link_href
Link_subwindow.focus()
}

However, if you return the browser to the front and click on the "view PDF" a second time, Acrobat will not regain focus. It's like this code works only once.

Does anyone know wwhat's wrong here?

My browser is IE 6.0 and Acrobat is version 7.