Find the ID from object-tag in SVG

[dutzend]

Hi ng,

I must detect the ID of the object-tag from within the SVG.
<object data="test.svg" type="image/svg+xml" id="extern1"></object>

I try for example something in TEST.SVG:
<svg onload="alert(document.parent.id)" ...></svg>

I must find "extern1". Can somebody help?

thx
Rene Tuchscherer