blackberry 6: getTimezoneOffset

in my blackberry 6 widget I try to use following JavaScript-Code to calculate timezone of the client.

var tiz = -(new Date().getTimezoneOffset() / 60);

Here you can find online example.

Unfortunately BB6 calculates only 0.

May be someone has 开发者_StackOverflow中文版an idea what's the matter here or maybe suggests code that works better on BB6.

Thanks in advance!

Daniel

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This is a known BB6 issue. And it seems that there is an update to fix this issue.