How do I get the current iframe location from within the iframe?

I've seen solutions like

top.document.getElementById('iframe_a').src

But the problem is, that I don't know the Iframes ID. My Applica开发者_开发问答tion is running as a Gmail-Gadget and therefore I don't know which ID Google will generate.

So how can I get the URL of my gadget?

Using JQuery will also be fine.

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If your script is executed within an iframe, location.href should do it. You might want to access the location object in more detail tho.