function set_cookie(name,value,days) {
	if (days)
	{
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function get_cookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++)
	{
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function clear_cookie(name) {
	createCookie(name,"",-1);
}

function doc_element_by_id(element_id) {
  if ((document.getElementById) && (document.getElementById(element_id))){ return document.getElementById(element_id); }
  else if ((document.all) && (document.all[element_id])){ return document.all[element_id]; }
  else { return false; }
}

//DEBUG to be tested
function form_value_by_name(form_name, element_name){
  var element;
  alert(form_name);
  for(element in document.forms[form_name].elements){
    if(element.name == element_name){
      return element.value;
    }
  }
  return null;
}

function form_value_by_name(element_id){
  element = doc_element_by_id(element_id);
  if(element){
    return element.value;
  }
  return null;
}