function lang_en_change()
{
    var Expression = String(window.location);
	var temp = Expression;
	var Find='/de/';
	var Replace='/en/';
	var a = 0;

	for (var i = 0; i < Expression.length; i++) 
	{
		a = temp.indexOf(Find);
		if (a == -1)
			break
		else
			temp = temp.substring(0, a) + Replace + temp.substring((a + Find.length));
	}

	window.open(temp,'_self');
}



function lang_el_change()
{
    var Expression = String(window.location);
	var temp = Expression;
	var Find='/de/';
	var Replace='/el/';
	var a = 0;

	for (var i = 0; i < Expression.length; i++) 
	{
		a = temp.indexOf(Find);
		if (a == -1)
			break
		else
			temp = temp.substring(0, a) + Replace + temp.substring((a + Find.length));
	}

	window.open(temp,'_self');
}

function lang_ru_change()
{
    var Expression = String(window.location);
	var temp = Expression;
	var Find='/de/';
	var Replace='/ru/';
	var a = 0;

	for (var i = 0; i < Expression.length; i++) 
	{
		a = temp.indexOf(Find);
		if (a == -1)
			break
		else
			temp = temp.substring(0, a) + Replace + temp.substring((a + Find.length));
	}

	window.open(temp,'_self');
}