var doepu = 1;
function dopop() {


}

function popup(url, args)
{
    var w=eval("page"  + new Date().getTime() + "=window.open('" +
                url + "', '_blank', '" + args + "');");
    w.focus();
    return w;
}

function popunder(url, args)
{
    var w=eval("page"  + new Date().getTime()  + "=window.open('" + url + "', '_blank', '" + args + "');"); 
    w.blur();
    window.focus();
    return w;
}

function showepu(id, height, width, position,flag,scrollbars) {
    if(!id) {
        return false;
    }

    var epuurl = "/register_popunder.asp?pop_id="+id;
    var epuargs = "height="+height+",width="+width+",location=0,menubar=0,scrollbars="+scrollbars+",statusbar=0,toolbar=0";
    if (doepu != 0) {
         if (flag == 2) { 
                if (position == 1) { 
                    var w = popup(epuurl, epuargs);
                    w.window.focus();
             } 
                if (position == 2) { 
                   var w = popunder(epuurl, epuargs);     
              }
         } 
         if (flag == 1) { 
                if (position == 1) { 
                    var w=popup(epuurl, epuargs);
                    w.moveTo((screen.width/2)-width/2,(screen.height/2)-height/2);
                  }
                if (position == 2) { 
                    var w=popunder(epuurl, epuargs);
                    w.moveTo((screen.width/2)-width/2,(screen.height/2)-height/2);
                }
         } 
    }
}

function noepu() {
    doepu = 0;
}

function setepu(u) {
    epuurl = u;
}

//window.onunload = showepu;
var unloadAdd = function(additional){
  var current = window.onunload;
  window.onunload = current ? function(){ current(); additional(); } : additional;
}
unloadAdd(dopop);
//window.onunload = dopop;