var openDiv = "";
var close_interval = 0;
var open_kongress = "";


// Browsertest
ns6 = (!document.all&&document.getElementById) ? true:false;
ns4 = (!document.all&&document.layers&&!document.getElementById)? true:false;
ie4 = (document.all)? true:false;

// On Mouse over Menue X
function show_div(div)
{
	// Menue schon offen? - mache nix
	if (div == openDiv) 
	{
		clearInterval(close_interval);
		close_interval=0;
		return;
	}
	else if (openDiv != "") 
	{
		close_div(openDiv);
		openDiv="";
	}

	if (ie4) { 
		document.all[div].style.visibility='visible';
	} else if (ns4) {
		eval('document.'+div+'.visibility=\'show\'');
	} else if (ns6) {
		document.getElementById(div).style.visibility='visible';
	}

	openDiv = div;
	return; 
}

function close_div(div)
{
	// läuft Interval zum schließen des Menues??
	if (close_interval)
	{
		clearInterval(close_interval);
		close_interval=0;
	}

	if (ie4) { 
		document.all[div].style.visibility='hidden';
	} else if (ns4) {
		eval('document.'+ div +'.visibility=\'hide\'');
	} else if (ns6) {
		document.getElementById(div).style.visibility='hidden';
	}
	
	openDiv = "";
}

function out_div()
{ 
	if (openDiv != "") close_interval = setInterval("close_div(openDiv)", 800);
}

function showhide_div(showdiv, hidediv)
{
	if (ie4) { 
		document.all[showdiv].style.display='block';
		document.all[hidediv].style.display='none';
	} else if (ns4) {
		eval('document.'+showdiv+'.display=\'block\'');
		eval('document.'+hidediv+'.display=\'none\'');
	} else if (ns6) {
		document.getElementById(showdiv).style.display='block';
		document.getElementById(hidediv).style.display='none';
	}
	return; 
}

function showkongress_div(showdiv)
{
	if (open_kongress != showdiv) {
		if (ie4) {
			document.all[showdiv].style.display='block';
		} else if (ns4) {
			eval('document.'+showdiv+'.display=\'block\'');
		} else if (ns6) {
			document.getElementById(showdiv).style.display='block';
		}
	}
	else {
		showdiv = "";
	}

	if (open_kongress != "") {
		if (ie4) {
			document.all[open_kongress].style.display='none';
		} else if (ns4) {
			eval('document.'+ open_kongress +'.display=\'none\'');
		} else if (ns6) {
			document.getElementById(open_kongress).style.display='none';
		}
	}

	open_kongress = showdiv;
	return; 
}

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 do_nothing() 
{
	return;
}