self.focus();

function setOn(obj)
{
	var new_src = obj.src.replace(/_off/, "_on");
	obj.src = new_src;
}

function setOff(obj)
{
	var new_src = obj.src.replace(/_on/, "_off");
	obj.src = new_src;
}

function check_email(s)	
{
    var a = false;
    var res = false;
    if(typeof(RegExp) == 'function')
    {
	var b = new RegExp('abc');
	if(b.test('abc') == true){a = true;}
    }

    if(a == true)
    {
	reg = new RegExp('^([a-zA-Z0-9\\-\\.\\_]+)(\\@)([a-zA-Z0-9\\-\\_\\.]+)(\\.)([a-zA-Z]{2,4})$');
	res = (reg.test(s));
    }
    else
    {
	res = (s.search('@') >= 1 && s.lastIndexOf('.') > s.search('@') && s.lastIndexOf('.') >= s.length-5);
    }

    return(res);
}

function change_lang(lang)
{
	var old_lang = (lang == 'de')	?	('en')	:	('de')
	var replace_string_old = "/"+old_lang+"/";
	var replace_string_new = "/"+lang+"/";
	var url=document.location.href;
	
	document.location.href = url.replace(replace_string_old, replace_string_new);
}