function floatMenu() {
	if ($('floatmenu')) {
		if (ffx) {
			ffx.cancel();
		}
		var  ffx = new Fx.Morph('floatmenu', {duration: 200,  transition: Fx.Transitions.Sine.easeOut})
		ffx.pause();
		var scroll = window.getScroll();
		var size = $('container').getSize();
		var size2 = $('floatmenu').getSize();
		var margin = scroll.y-130;
		var pageheight = size.y-size2.y-300;
		if (scroll.y > 180 && pageheight > margin) {
			ffx.start({ 'margin-top': margin+'px' });
		}
		if (scroll.y <= 180) {
			ffx.start({ 'margin-top': '0px' });
		}
			
		/* $('floatmenudata').innerHTML = 'scroll: ' + scroll.y + ' > 200 && ' + pageheight + ' > ' + margin + '<br />pageheight = ' + size.y + ' - ' + size2.y; */
	}
}
floatMenu();
window.onscroll = floatMenu;