/******
 * Copyright: Bernardini & Schnyder GmbH
 * Author: Sebastian Haller
 * Date: 2006
 */

function hide_download(i) {
	make_invisible('download_frame_'+i);
	make_invisible('download_form_'+i);

	return false;
}

function elementX(obj)
{
  var curleft = 0;
  if (obj.offsetParent) {
    while (obj.offsetParent) {
      curleft += obj.offsetLeft;
      obj = obj.offsetParent;
    }
  }
  else if (obj.x)
    curleft += obj.x;
  return curleft;
}

function elementY(obj)
{
  var curtop = 0;
  if(obj.offsetParent) {
    while (obj.offsetParent) {
      curtop += obj.offsetTop;
      obj = obj.offsetParent;
    }
  }
  else if (obj.y)
    curtop += obj.y;
  return curtop;
}

function make_visible()
{
  for( var i = 0; i < arguments.length; i++ ) {
    var element = ge(arguments[i]);
    if (element && element.style) element.style.visibility = 'visible';
  }
  return false;
}

function make_invisible()
{
  for( var i = 0; i < arguments.length; i++ ) {
    var element = ge(arguments[i]);
    if (element && element.style) element.style.visibility = 'hidden';
  }
  return false;
}

function ge()
{
  var ea;
  for( var i = 0; i < arguments.length; i++ ) {
    var e = arguments[i];
    if( typeof e == 'string' )
      e = document.getElementById(e);
    if( arguments.length == 1 )
      return e;
    if( !ea )
      ea = new Array();
    ea[ea.length] = e;
  }
  return ea;
}

function show()
{
  for( var i = 0; i < arguments.length; i++ ) {
    var element = ge(arguments[i]);
    if (element && element.style) element.style.display = '';
  }
  return false;
}

function hide()
{
  for( var i = 0; i < arguments.length; i++ ) {
    var element = ge(arguments[i]);
    if (element && element.style) element.style.display = 'none';
  }
  return false;
}

function toggle()
{
  for( var i = 0; i < arguments.length; i++ ) {
    var element = ge(arguments[i]);
    element.style.display = (element.style.display != 'none') ? 'none' : '';
  }
  return false;
}

// allow only numbers to be entered in sone fields
function goodchars(e, chars)
{
	var key, keychar;

	if (window.event)
		key = window.event.keyCode;
	else if (e)
		key = e.which;
	else
		return true;

	keychar = String.fromCharCode(key);
	keychar = keychar.toLowerCase();
	chars = chars.toLowerCase();

	if (chars.indexOf(keychar) != -1)
		return true;

	// control keys
	if ( key==null || key==0 || key==8 || key==9 || key==13 || key==27 )
		return true;

	return false;
}

// new window
function newwindow(url, name, w, h, features) {
	if(screen.width)
	{
		var winl = (screen.width-w)/2;
		var wint = (screen.height-h)/2;
	}
	else
	{
		winl = 0;
		wint = 0;
	}
	if (winl < 0)
		winl = 0;
	if (wint < 0)
		wint = 0;
	//var settings = 'scrollbars=yes, resizable=yes, ';
	var settings = '';
	settings += 'height=' + h + ', ';
	settings += 'width=' + w + ', ';
	//settings += 'top=' + wint + ', ';
	//settings += 'left=' + winl + ', ';
	settings += features;
	win = window.open(url, name, settings);
	win.resizeTo(w, h);
	win.focus();
	// do not uncomment this. it is used in links containing
	// a href for users without javascript and an onclick="return newwindow(...);" for users with javascript
	// we do not want the href action to be excuted on success!
	return false;
}

// used to confirm a link before sending request (i.e. for delete links)
function confirmlink(text, obj)
{
	var is_confirmed = confirm(text);
	if (is_confirmed)
		obj.href += '&js_confirmed=1';

	return is_confirmed;
}

// changes content of a div
function setcontent(obj, content)
{
	document.getElementById(obj).innerHTML = content;
	return false;
}

// hide div
function hidediv(obj)
{
	o = document.getElementById(obj);
	o.style.display='none';
}

// show div
function showdiv(obj)
{
	o = document.getElementById(obj);
	o.style.display='block';
}

//13th parallel
function getViewportWidth() {
	return f_filterResults (
		window.innerWidth ? window.innerWidth : 0,
		document.documentElement ? document.documentElement.clientWidth : 0,
		document.body ? document.body.clientWidth : 0
	);
}
function getViewportHeight() {
	return f_filterResults (
		window.innerHeight ? window.innerHeight : 0,
		document.documentElement ? document.documentElement.clientHeight : 0,
		document.body ? document.body.clientHeight : 0
	);
}
function getPageScrollWidth() {
	return f_filterResults (
		window.pageXOffset ? window.pageXOffset : 0,
		document.documentElement ? document.documentElement.scrollLeft : 0,
		document.body ? document.body.scrollLeft : 0
	);
}
function getPageScrollHeight() {
	return f_filterResults (
		window.pageYOffset ? window.pageYOffset : 0,
		document.documentElement ? document.documentElement.scrollTop : 0,
		document.body ? document.body.scrollTop : 0
	);
}
function f_filterResults(n_win, n_docel, n_body) {
	var n_result = n_win ? n_win : 0;
	if (n_docel && (!n_result || (n_result > n_docel)))
		n_result = n_docel;
	return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
}