function getCookie(c_name)
{
if (document.cookie.length>0)
  {
  c_start=document.cookie.indexOf(c_name + "=");
  if (c_start!=-1)
    { 
    c_start=c_start + c_name.length+1; 
    c_end=document.cookie.indexOf(";",c_start);
    if (c_end==-1) c_end=document.cookie.length;
    return unescape(document.cookie.substring(c_start,c_end));
    } 
  }
return "";
}

function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ "=" +escape(value)+
((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
}

function checkCookie(){
	var banner = "Cemex_UK_Microsite.swf";
	var banner1 = "fla_Microsite_Banner1.swf";
	var banner2 = "fla_Microsite_Banner2.swf";
	var banners=getCookie('banner');
	//document.write("start: "+banners+"<br>");
	if (banners!=null && banners!=""){
		//document.write("noNull: "+banners+"<br>");
  		if(banners=="1"){
			setCookie('banner',"2",365);
			return(banner2);
		}else{
			setCookie('banner',"1",365);
			return(banner1);
		}
	}else{
		//document.write("null: "+banners+"<br>");
	  setCookie('banner',banner1,365);
	  return(banner1);
	}
}