function getByID (n) {
    var d = window.document;
    if (d.getElementById)
        return d.getElementById(n);
    else if (d.all)
        return d.all[n];
}

function showhide_share (entry_id) {
	var share_div = getByID('share_' + entry_id);
	var arrow = getByID('share_img_' + entry_id);
	if (!share_div.style.display || (share_div.style.display == 'none')) {
		share_div.style.display = 'block';
		arrow.src = '/img/open.gif';
	} else {
		share_div.style.display = 'none';
		arrow.src = '/img/closed.gif';
	}
}