Payless Posts Profit on Cost Control  NEW YORK (Reuters) - Retailer Payless ShoeSource Inc.  &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=PSS.N target=/stocks/quickinfo/fullquote"&gt;PSS.N&lt;/A&gt; on Friday posted a quarterly profit, as lower  advertising and payroll expenses and other cost savings offset  decreased sales.