var ajax = new sack();

function expandCats(id) {
	ajax.requestFile = 'getCats.php?pid='+id;
	ajax.onCompletion = createCats;
	ajax.runAJAX();
}

function createCats()
{
	eval(ajax.response);
}
function collapseCats(id) {
	document.getElementById('sub' + id).innerHTML = '';
	document.getElementById('a' + id).href = "javascript:expandCats(" + id + ")";
	document.getElementById('exp' + id).src = "images/expand.gif";
	document.getElementById('exp' + id).alt = "Expand";
	document.getElementById('exp' + id).title = "Expand";
}