var popunder1="http://www.regionaltruckingjobs.com/popunders/" 
                               
var winfeatures="width=763,height=260,scrollbars=1,resizable=1,toolbar=0,location=0,menubar=0,status=1,directories=0" 
                
function loadpopunders(){ 
     if(document.getElementById("popunder").value != "1"){ 
          win2=window.open(popunder1,"",winfeatures) 
          win2.blur(); 
          window.focus(); 
          document.getElementById("popunder").value = "1"; 
          if (/Chrome[\/\s](\d+\.\d+)/.test(navigator.userAgent)){ 
               window.blur(); 
          } 
     } 
}