function showmenu(id)
{
	document.getElementById("box").style.visibility = "visible";
	document.getElementById("menu_" + id).style.visibility = "visible";
} 

function hidemenu()
{
	document.getElementById("menu_ueberuns").style.visibility = "hidden";
	document.getElementById("menu_kunde").style.visibility = "hidden";
	document.getElementById("menu_bewerber").style.visibility = "hidden";
	document.getElementById("menu_referenzen").style.visibility = "hidden";
	document.getElementById("menu_events").style.visibility = "hidden";
	document.getElementById("menu_mitarbeiter").style.visibility = "hidden";
	document.getElementById("menu_kontakt").style.visibility = "hidden";
	document.getElementById("box").style.visibility = "hidden";
}

function bildtausch(bildname,austauschbild)

	{

	eval('document.getElementById("' + bildname + '").src = "' + austauschbild + '";');

	}





function atersetzen(domain, user)

	{

	location.href = "mailto:" + user + "@" + domain;

	}