function colour(anE){
  for(var j=0;j<anE.childNodes.length;j++){
    if(anE.childNodes[j].nodeName=="A" && 
				(anE.childNodes[j].innerHTML.toLowerCase().indexOf('pdf')>-1 || 
					anE.childNodes[j].innerHTML.toLowerCase().indexOf('fact sheet')>-1)){
   	  anE.childNodes[j].className="blue";
    }
    colour(anE.childNodes[j]);
  }
}

function colourise(maxPS){
  for(var i=1;i<=maxPS;i++){
  	var ps = document.getElementById('ps'+i+'_info'); 
  	if(ps){
			colour(ps);
  	}
  }
}