Calling function in iframe

[BobJohnson]

I have an iframe which beside other script has a function called buttonMap(number) which runs some code. I would like to call the function with different values using buttons outside of the iframe. (I don't want to reload a page each time).
Can this be done? For simplicity lets say the iframe has id="showMap".
In my naive way I was thinking that I could link a xara button in web properties as for instance: javascript:showMap.buttonMap(2).
I realise this won't work (have tried it) but is it possible to call a function in an iframe from xara?
Any help would be appreciated.
Thanks
Bob

[gwpriester]

Welcome to TalkGraphics Bob

Someone will answer this shortly.

[Acorn]

javascript: getElementById('showMap').buttonMap(2); .

Try this that I edited from your go.

Acorn

[BobJohnson]

Many thanks. Without your help I would still be struggling. Needed a bit of tweaking.
Final solution from example is:

javascript: document.getElementById("showMap").contentWindow.b uttonMap(2);

Again - thank you very much
Bob

[Acorn]

Many thanks. Without your help I would still be struggling. Needed a bit of tweaking.
Final solution from example is:

javascript: document.getElementById("showMap").contentWindow.b uttonMap(2);

Again - thank you very much
Bob

Glad you're there Bob.

Acorn