function pomoc(t, event){
	var b, x, y;
	$(t).css('visibility', 'visible');
	b = document.body;
	var scrollTop = (window.pageYOffset)
        ? window.pageYOffset
        : (document.documentElement && document.documentElement.scrollTop)
                ? document.documentElement.scrollTop
                : document.body.scrollTop;
    x = event.clientX + b.scrollLeft;
    y = event.clientY + scrollTop;
	$(t).css('top', y);
	x = x-330;
	$(t).css('left', x);
}


function pomoc_close(t){
	$(t).css('visibility', 'hidden');

}