function ZAjaxSubscribeUser(userid, subscribed_userid, sname, rk, rt){
	ajax_update_div = 'subscribe_status';
	ajax_slide_out_delay = 3;

	status_div = $(ajax_update_div);
	var parameters = 'stype=user&uid=' + userid + '&sid=' + subscribed_userid + '&sname=' + sname + '&rk=' + rk + '&rt=' + rt;

	makePOSTRequest('/ajax/ajax-subscriptions.php', parameters, ZJSdoGenericCallback);
}

function ZAjaxSubscribeTag(userid, tag, ctype, ctype_sub, rk, rt) {
	ajax_update_div = 'subscribe_status';
	ajax_slide_out_delay = 3;

	status_div = $(ajax_update_div);
	status_div.innerHTML = 'Sending request...';
	status_div.slide("in");

	var parameters = 'stype=tag&uid=' + userid + '&tag=' + tag + '&ctype=' + ctype + '&ctype_sub=' + ctype_sub + '&rk=' + rk + '&rt=' + rt;

	makePOSTRequest('/ajax/ajax-subscriptions.php', parameters, ZJSdoGenericCallback);
}