function skipIntro () 
{
	Element.hide('intro_flash');
	Element.show('intro_image');
	Element.hide('skip_intro');
}

function hideAllExcept(selector,element)
{
	var elements = $$(selector);
	for (var i=0; i<elements.length; i++)
		if (elements[i] != element)
			$(elements[i].id).hide();
}