function showDesc(id) {
	findPos(document.getElementById('link_' + id));
	
	var rollover = document.getElementById('rollover_' + id);
	
	rollover.style.display = 'block';
	rollover.style.top = (curtop - 37) + 'px';
	rollover.style.left = (curleft + 200) + 'px';
}

function hideDesc(id) {
	document.getElementById('rollover_' + id).style.display = 'none';
}

var curleft = curtop = 0;

function findPos(obj) {
	curleft = curtop = 0;
	
	if (obj.offsetParent) {
		do {
			curleft += obj.offsetLeft;
			curtop += obj.offsetTop;
		} while (obj = obj.offsetParent);
	}
}