window.addEvent("load",setStyles);

function setStyles()
{    
     setFooterStyle($("col-1").getElements('ul li a'));
     setFooterStyle($("col-2").getElements('ul li a'));
 }

function setFooterStyle(links)
{    
    links.each(function(link){
      if (link.href.match(/.[Pp][Dd][Ff]/)){
            link.addClass('pdf');
         }
    });
}