function initArray() {
  for (i = 0; i < initArray.arguments.length; i++) {
    this[i] = initArray.arguments[i];
  };
};

function getCookie(name) {
  var dc = document.cookie;
  var prefix = name + "=";
  var begin = dc.indexOf("; " + prefix);
  if (begin == -1) {
    begin = dc.indexOf(prefix);
    if (begin != 0) return null;
  } else
    begin += 2;
  var end = document.cookie.indexOf(";", begin);
  if (end == -1)
    end = dc.length;
  return unescape(dc.substring(begin + prefix.length, end));
};

function replace(string, text, by) {
  var i = string.indexOf(text);
  var newstr = '';
  if ((!i) || (i == -1)) return string;
  newstr += string.substring(0,i) + by;

  if (i+text.length < string.length)
    newstr += replace(string.substring(i+text.length,string.length),text,by);

  return newstr;
}

function handleEnter (field, event) {
  var keyCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
  if (keyCode == 13) {
    var i;
    for (i = 0; i < field.form.elements.length; i++)
      if (field == field.form.elements[i])
        break;
      i = (i + 1) % field.form.elements.length;
      field.form.elements[i].focus();
      return false;
   }
   else
     return true;
}

function Is() {
    var agt=navigator.userAgent.toLowerCase();

    this.major = stringToNumber(navigator.appVersion);
    this.minor = parseFloat(navigator.appVersion);

    this.nav  = ((agt.indexOf('mozilla')!=-1) && ((agt.indexOf('spoofer')==-1)
                && (agt.indexOf('compatible') == -1)));
    this.nav2 = (this.nav && (this.major == 2));
    this.nav3 = (this.nav && (this.major == 3));
    this.nav4 = (this.nav && (this.major == 4));
    this.nav5 =  (this.nav && (this.major == 5));
    this.nav6 = (this.nav && (this.major == 5));
    this.gecko = (this.nav && (this.major >= 5));

    this.ie   = (agt.indexOf("msie") != -1);
    this.ie3  = (this.ie && (this.major == 2));
    this.ie4  = (this.ie && (this.major == 3));
    this.ie5  = (this.ie && (this.major == 4));

    this.opera = (agt.indexOf("opera") != -1);

    this.nav4up = this.nav && (this.major >= 4);
    this.ie4up  = this.ie  && (this.major >= 4);
};

function getElt() {
  if (is.nav4) {
    var currentLayer = document.layers[getElt.arguments[0]];
    for (var i=1; i<getElt.arguments.length && currentLayer; i++) {
      currentLayer = currentLayer.document.layers[getElt.arguments[i]];
    }
    return currentLayer;
  } else if(document.getElementById && document.getElementsByName) {
    var name = getElt.arguments[getElt.arguments.length-1];
    if(document.getElementById(name)) {
       return document.getElementById(name);
    } else if (document.getElementsByName(name)) {
      return document.getElementsByName(name)[0];
     }
  } else if (is.ie4up) {
    var elt = eval('document.all.' + getElt.arguments[getElt.arguments.length-1]);
    return(elt);
  }
};

function showElt(elt) {
  setEltVisibility(elt, 'visible');
};

function hideElt(elt) {
  setEltVisibility(elt, 'hidden');
};

function setEltVisibility(elt, value) {
  if (is.nav4) {
    elt.visibility = value;
  } else if (elt.style) {
    elt.style.visibility = value;
  }
};

function stringToNumber(s) {
  return parseInt(('0' + s), 10);
};



var is = new Is();