Setting Text-Decoration via JavaScript

I am trying to use this code:

Code:

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document.getElementById('elementId').style.text-decoration = 'blink';

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But I get an error about the hypen in between text and decoration. Is there a work around or can I use something like:

Code:

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document.getElementById('elementId').style['text-decoration'] = 'blink';

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Try .textDecoration

the "-" is a mathematical operator in javascript.

Thanks Josh. It worked, but it doesn't seem to make the text blink (tried in in Mozilla by the way not IE, so that's not the problem). Oh well it's not that important anyway.