function resize(elem, max) 
{
	if (elem == undefined || elem == null) return false;
	if (max == undefined) max = 600;
	if (elem.width > elem.height) 
	{
		if (elem.width > max) elem.width = max;
	} 
	else 
	{
		if (elem.height > max) elem.height = max;
	}
}