// decrypt helper function
function G21_decryptCharcode(n,start,end,offset)
	{
	n = n + offset;
	if (offset > 0 && n > end)	{
		n = start + (n - end - 1);
	} else if (offset < 0 && n < start)	{
		n = end - (start - n - 1);
	}
	return String.fromCharCode(n);
	}
// decrypt string
function G21_decryptString(enc,offset)
	{
	var dec = "";
	var len = enc.length;
	for(var i=0; i < len; i++)	{
		var n = enc.charCodeAt(i);
		if (n >= 0x2B && n <= 0x3A)	{
			dec += G21_decryptCharcode(n,0x2B,0x3A,offset);	// 0-9 . , - + / :
		} else if (n >= 0x40 && n <= 0x5A)	{
			dec += G21_decryptCharcode(n,0x40,0x5A,offset);	// A-Z @
		} else if (n >= 0x61 && n <= 0x7A)	{
			dec += G21_decryptCharcode(n,0x61,0x7A,offset);	// a-z
		} else {
			dec += enc.charAt(i);
		}
	}
	return dec;
	}
// decrypt spam-protected emails
function G21_uncryptMailto(s)
	{
	location.href = G21_decryptString(s,-2);
	}


// Funktion zum Ein-/Ausklappen eines Listeneintrages
// sowie zum Austausch des Plus/Minus-Symbols
function CMM_listItemDisplay(id)
	{
	// Ebene und Symbol finden
//	theDIV = document.getElementById('div_'+id);
	theSYM = document.getElementById('sym_'+id);

	// wenn "plus" in Dateinamen dann oeffnen und Symbol -> "-"
	if(theSYM.src.indexOf("plus") >= 1)
		{
//		theDIV.style.height = '';
		theSYM.src = 'pix/icon-minus.png';
		}
	// wenn "minus" in Dateinamen dann schliessen und Symbol -> "+"
	else if(theSYM.src.indexOf("minus") >= 1)
		{
//		theDIV.style.height = '29px';
		theSYM.src = 'pix/icon-plus.png';
		}
	return false;
	}