// Odskroluje na spodní část obrazovky

function getYScroll()
{
  var yScroll;	
	if (window.innerHeight && window.scrollMaxY) {			
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		yScroll = document.body.offsetHeight;
	}
	return yScroll;
}

function scrollToBottom() {
   window.scrollTo(0,getYScroll());
}