Mootools: setStyle height and width - IE8 not working

I am using Mootools to set height and width on divs. Functionality is fine in Chrome and Firefox, IE8 is not. I know IE8 has issues with height in general, but I am not even writing height and width in IE. Any help much appreciated.

<div container height="" width="">

</div>

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window.addEvent('domready',function() {
	size = window.getSize();
	width = size.x;
	height= size.y
	container = $('container');
	
	//Height and width of browser window
	function browserSize() {
		//Always set container
		container.setStyle('width',width + 'px');
		container.setStyle('height',height -58  + 'px');
        }
}

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