function setHeight()
{
	var content = document.getElementById('content');
	var header = document.getElementById('header');
	var top = document.getElementById('top');
	var menu = document.getElementById('menu');
	var footer = document.getElementById('footer');
	var minheight = document.documentElement.clientHeight - header.offsetHeight - top.offsetHeight - menu.offsetHeight - footer.offsetHeight - 32;
	if (content.offsetHeight < minheight)	
	{					
		content.style.height = minheight+'px';
	}
	footer.style.width = '748px';
}
window.onresize = 'setHeight';