// decrypt helper function
function 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 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 += decryptCharcode(n,0x2B,0x3A,offset);	// 0-9 . , - + / :
		} else if (n >= 0x40 && n <= 0x5A)	{
			dec += decryptCharcode(n,0x40,0x5A,offset);	// A-Z @
		} else if (n >= 0x61 && n <= 0x7A)	{
			dec += decryptCharcode(n,0x61,0x7A,offset);	// a-z
		} else {
			dec += enc.charAt(i);
		}
	}
	return dec;
}
// decrypt spam-protected emails
function linkTo_UnCryptMailto(s)	{
	location.href = decryptString(s,-1);
}

// scroll > text
function scroll() {
	//alert($(document).attr("href"));
	//alert($('div.center').height()+' / '+$(window).height()); >> center-box
	
	var loc = document.location.href;
	if ((loc.search(/#/) == -1) && ($(window).height() < 820)) {
		
			document.location.href = loc+'#menu';
	}
}

// anfahrt
function switchMap() {
	imgContainer = document.getElementById('imgs');
	try {
		imgContainer.childNodes[1].src = 'uploads/pics/sh_map.jpg';
	} catch (e) {}
}

// menu scroll
var wrapper 					= $('div.wrap');
var scrollable 				= $('div.wrap ul');

var wrapperOffset 		= wrapper.offset();
var wrapperHeight 		= wrapper.height();
var scrollableHeight 	= scrollable.outerHeight();
var scrollablePx			= scrollableHeight - wrapperHeight;

if (wrapperHeight < scrollableHeight) {
	wrapper.mousemove(function(e){
		var top = (e.pageY - wrapperOffset.top) * scrollablePx / wrapperHeight;
		
		wrapper.scrollTop( top+(top/scrollablePx) ); // pixel overhead
	});
}