var nav = (navigator.appVersion.indexOf("Chrome") != -1) ? "Chrome" : navigator.appName;
var nav = (navigator.appVersion.indexOf("Safari") != -1) ? "Safari" : nav;

function _getCoordNN(event) {
  cx = event.pageX;
  cy = event.pageY;
}//function

function _getCoordIE()  {
  cx = window.event.clientX;
  cy = window.event.clientY;
}//function

function find_pos(elem, stop_elem) {
  obj = document.getElementById(elem);
  var curleft = curtop = 0;
  if (obj.offsetParent) {
    do {
      curleft += obj.offsetLeft;
      alert(obj.offsetLeft)
      curtop += obj.offsetTop;
      if(obj == document.getElementById(stop_elem)) return [curleft,curtop];
    } while (obj = obj.offsetParent)
    return [curleft,curtop];
  }//if
}//function

function d(elem_id) {
  return document.getElementById(elem_id);
}//function

function extract_value(get, variable) {
  full_variable = "&" + variable + "=";
  variable_length = full_variable.length;
  if(get.indexOf("&" + variable + "=") == -1) return "";
  val = get.substr(get.indexOf("&" + variable + "=")+variable_length);
  if(val.indexOf("&") != -1) 
  val = val.substr(0,val.indexOf("&"));
  return val; 
}//function

function delete_last_i4(needed_string) {
  return needed_string.substr(0,needed_string.length-1);
}//function 

var asvcs = 1;
function article_steps_vote(step,yn) {
  //aid = d("article_id").innerHTML;
  aid = 1;
  ajax( "php/article_steps_voting.php", "&aid=" + aid + "&step=" + step + "&yn=" + yn, "article_steps_voting_next_step", "article steps voting", "POST" );
}//function

function send_message(frame_name,file,to_elem_id,add,add2,add3) {
  ajax(file,"&send_message=true&message=" + d(frame_name+"_message_field").value + "&email=" + d(frame_name+"_email_field").value + "&add=" + add2 + "&add2=" + add3,to_elem_id,add,"POST");
}//function