var showdiv = "";

function click_me(what, inhalt)
{
	if (document.getElementById(what).value == inhalt) 
	{
		document.getElementById(what).value="";
	}	
}

function leave_me(what, inhalt)
{
	if (document.getElementById(what).value == "") document.getElementById(what).value=inhalt;
}

function load_page(formular, seite, nummer)
{
	document.getElementById(seite).value=nummer;
	document.getElementById(formular).submit();
}

function show_div(div)
{
	if (showdiv == div) 
	{
		document.getElementById(div).style.display='none';
		showdiv = "";
	}
	else
	{
		if (showdiv != "") document.getElementById(showdiv).style.display='none';
		document.getElementById(div).style.display='block';
		showdiv = div;
	}
}

function check_tk(val)
{
	if (val == 1)
	{
		// Gesamtkarte
		document.getElementById("komplett").disabled = false;
		document.getElementById("komplett").checked = true;
		document.getElementById("tk19").disabled = true;
		document.getElementById("tk20").disabled = true;	
		document.getElementById("tk21").disabled = true;	
	}
	else if (val == 2)
	{
		// Tageskarten
		document.getElementById("komplett").disabled = true;
		document.getElementById("tk19").disabled = false;
		document.getElementById("tk19").checked = true;
		document.getElementById("tk20").disabled = false;	
		document.getElementById("tk21").disabled = false;	
	
	}
}