function SetHeights()
{
	// Set main content wrapper height (min-height: 100%)
	var wrapper = document.getElementById("main");
	var parentWrapper = wrapper.parentNode;
	
	if(wrapper.offsetHeight < parentWrapper.offsetHeight)
	{
		wrapper.style.height = parentWrapper.offsetHeight - 17 - 17 + 'px'; // 17px as top and bottom margin values
	}
}