function entry(block) {
	$j(document).mousemove(function(event){
		showblock(block, event);
	});
	$j('#'+block).css('visibility', 'visible');
}

function leave(block) {
	$j(document).unbind('mousemove');
	$j('#'+block).css('visibility', 'hidden');
	$j('#'+block).css('left', 0 + 'px');
	$j('#'+block).css('top', 0 + 'px');
}

function fromleft(block, n) {
	$j('#'+block).css('left', n + 'px');
}
function fromtop(block, n) {
	$j('#'+block).css('top', n + 'px');
}
function showblock(block, e) {
	
	var pos = $j('#page-holder').position();
	var x = e.pageX - pos.left + 30;
	var y = e.pageY - 30;
	fromleft(block, parseInt(x));
	fromtop(block, parseInt(y));
}