function wopen(url,name,w,h,features){
 if(!features||features.length==0)features='scrollbars=yes,resizable=yes,menubar=no,toolbar=no,status=no,location=no';
 w+=32;h+=96;
 if(screen){
  var wleft=(screen.width-w)/2;if(wleft<0){w=screen.width;wleft=0;}
  var wtop=(screen.height-h)/2;if(wtop<0){h=screen.height;wtop=0;}
  features='left='+wleft+',top='+wtop+','+features;
 }
 features='width='+w+',height='+h+','+features;
 var win=window.open(url,name,features);
 if(win){
  try{
   win.resizeTo(w,h);
   if(screen){win.moveTo(wleft,wtop);}
   win.focus();
  }
  catch(err){}
 }
 return win;
}
function openCenteredWindow(url,name,w,h,features){
 wopen(url,name,w,h,features);
 void(0);
}
function setCookie(c_name, value, expiredays) {
    var exdate = new Date(); exdate.setDate(exdate.getDate() + (expiredays ? expiredays : 0));
    document.cookie = c_name + "=" + escape(value) + ((expiredays == null) ? "" : ";expires=" + exdate.toGMTString());
}
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 "";
}

var pdf_xtra = [];