function init()
{
	var theid = document.getElementById('choice-of-stock');
	var aTags = theid.getElementsByTagName('a');

	for(i=0;i<aTags.length;i++)
	{
		aTags[i].onmouseover = function(){show(this)};
		aTags[i].onmouseout = function(){hide(this)};
	}
}
function show(tag)
{
	var span = tag.getElementsByTagName('span');
	for(i=0;i<span.length;i++)
	{
		span[i].style.display = 'block';
	}
}
function hide(tag)
{
	var span = tag.getElementsByTagName('span');
	span[1].style.display = 'none';
}

window.onload = init;