[Moo] Issues with element.getComputedSize - Firefox o.k. - Safari fails

[mmjaeger]

Hello
I'm having an issue with the following code:

var tsize = this.thumbs[0].getDimensions({ computeSize: true, styles:
['margin', 'padding', 'border'] });
console.log('tsize: ' + tsize.totalWidth);
console.log('tsize: ' + tsize.totalWidth);

console.log('computed size: ' + this.thumbs[0].getComputedSize
().totalWidth);

in both cases, Firefox returns 95 which is correct while Safari
returns 0

I'm using 1.2.4 and 1.2.4.2 - Am I doing anything wrong or what's the
issue and how could I get the correct values?

Thanks