var doomready = new Object();

	doomready = {
		add: function(fn) {
			if (doomready.loaded) return fn();
			var observers = doomready.observers;
			if (!observers) observers = doomready.observers = [];
			observers[observers.length] = fn; // Arraypush is not supported by Mac IE 5
			if (doomready.callback) return;
			doomready.callback = function() {
				if (doomready.loaded) return;
				doomready.loaded = true;
				if (doomready.timer) {
					clearInterval(doomready.timer);
					doomready.timer = null;
				}
				var observers = doomready.observers;
				for (var i = 0, length = observers.length; i < length; i++) {
					var fn = observers[i];
					observers[i] = null;
					fn(); // make 'this' as window
				}
				doomready.callback = doomready.observers = null;
			};
	
			var ie = !!(window.attachEvent && !window.opera);
			var webkit = navigator.userAgent.indexOf('AppleWebKit/') > -1;
			if (document.readyState && webkit) { // Apple WebKit (Safari, OmniWeb, ...)
				doomready.timer = setInterval(function() {
					var state = document.readyState;
					if (state == 'loaded' || state == 'complete') {
						doomready.callback();
					}
				}, 50);
			}
			else if (document.readyState && ie) { // Windows IE
				var src = (window.location.protocol == 'https:') ? '://0' : 'javascript:void(0)';
				document.write(
					'<script type="text/javascript" defer="defer" src="' + src + '" ' +
					'onreadystatechange="if (this.readyState == \'complete\') doomready.callback();"' +
					'><\/script>');
			}
			else {
				if (window.addEventListener) { // for Mozilla browsers, Opera 9
					document.addEventListener("DOMContentLoaded", doomready.callback, false);
					window.addEventListener("load", doomready.callback, false); // Fail safe
				}
				else if (window.attachEvent) {
				window.attachEvent('onload', doomready.callback);
				}
				else { // Legacy browsers (e.g. Mac IE 5)
					var fn = window.onload;
					window.onload = function() {
						doomready.callback();
						if (fn) fn();
					}
				}
			}
		}
	}

/*-- alternativ x-menu --*/

	var navImagesNormal = new Array();
	var navImagesHover = new Array();
	var vorhanden;
	function init_nav() {
		if(document.getElementById('nav')) {
			var nav = document.getElementById('nav');
			vorhanden = true;
			var vergleichsid ='nav';
			}else{
		if(document.getElementById('nav_startpage')) {
			var nav = document.getElementById('nav_startpage');
			vorhanden=true;
			var vergleichsid ='nav_startpage';
			}else
			vorhanden=false;
			}
			if(vorhanden){
			var lis = nav.getElementsByTagName('li');
			for(var i = 0; i < lis.length; i++) {
				if(lis[i].parentNode.id == vergleichsid) {
					lis[i].number = i;
					lis[i].onmouseover = function() {
						addClass(this, 'hover');
						var img = this.getElementsByTagName('img');
						if(img[0] && navImagesHover[this.number])
							img[0].src = navImagesHover[this.number];
					}
					lis[i].onmouseout = function() {
						removeClass(this, 'hover');
						var img = this.getElementsByTagName('img');
						if(img[0] && navImagesNormal[this.number])
							img[0].src = navImagesNormal[this.number];
					}
					var img = lis[i].getElementsByTagName('img');
					if(img[0] && img[0].onmouseover) {
						navImagesNormal[i] = img[0].src;
						img[0].onmouseover();
						navImagesHover[i] = img[0].src;
						img[0].onmouseout();
						img[0].onmouseover = function() {};
						img[0].onmouseout = function() {};
					}
				}
			}
		}
	}

	doomready.add(function() {
		init_nav();
	});



function getAdr(prefix, postfix, text) {
        document.write('<a href="mailto:' + prefix + '@' + postfix + '">' + (text ? text.replace(/&quot;/g, '"').replace(/%EMAIL%/, prefix + '@' + postfix) : prefix + '@' + postfix) + '</a>');
}

function swapImage(element, newimage) {
	var oldsrc = element.src
	element.src = newimage
	if (!element.onmouseout)
		element.onmouseout = function (event) { swapImage(this, oldsrc); };
}
/*
var popupmenuoldonload = window.onload;
window.onload = function() {
	var nav = document.getElementById('nav');
	var uls = nav.getElementsByTagName('UL');
	for(var i = 0; i < uls.length; i++)
		new xMenu1(uls[i], 0, 'mouseover');
	if(popupmenuoldonload)
		popupmenuoldonload();
}
*/

function addClass(obj, newclass) {

		if(obj.className.indexOf(newclass) == -1)
			obj.className += " " + newclass;
	}
	
	function removeClass(obj, oldclass) {
		var classes = obj.className.split(' ');
		for(i=0; i<classes.length; i++) {
			if(classes[i].indexOf(oldclass) > -1)
				classes[i] = "";
		}
		obj.className = classes.join(' ');
	}


var sel;
function HideSelects(x,y,w,h) {
	if(xIE4Up && !xMac) {
		var selx, sely, selw, selh, i
		if(!sel)
			sel = document.getElementsByTagName("SELECT");
		for(i = 0; i < sel.length; i++) {
			selx = xPageX(sel[i]);
			sely = xPageY(sel[i]);
			selw = sel[i].offsetWidth;
			selh = sel[i].offsetHeight;
			sel[i].style.visibility = (selx + selw > x && selx < x + w && sely + selh > y && sely < y + h) ? "hidden" : "visible";
		}
	}
}

/* Ändert die font-size des body Tags. D.h. alle Angaben die skaliert werden sollen müssen relativ (in %) angegeben werden */
var busywaiter = window.setInterval(function() {
	if (document.body) {
		window.clearInterval(busywaiter);
		var nameEQ = "fontsize=";
		var ca = document.cookie.split(';');
		for(var i=0; i < ca.length; i++) {
			var c = ca[i];
			while (c.charAt(0) == ' ') c = c.substring(1, c.length);
			if (c.indexOf(nameEQ) == 0) return document.body.style.fontSize = c.substring(nameEQ.length, c.length);
		}
	}
}, 50);


// deletes leading and trailing spaces in a string - adds the function directly to the String Object, so that all strings inherit this method
String.prototype.trim = function() {
    return this.replace(/(^\s*)|(\s*$)/g, '');
}

//checkEmail - needed for forms
function checkEmail(val) {
	if (val) {
		var usr = "([a-zA-Z0-9][a-zA-Z0-9_.-]*|\"([^\\\\\x80-\xff\015\012\"]|\\\\[^\x80-\xff])+\")";
		var domain = "([a-zA-Z0-9][a-zA-Z0-9._-]*\\.)*[a-zA-Z0-9][a-zA-Z0-9._-]*\\.[a-zA-Z]{2,5}";
		var regex = "^"+usr+"\@"+domain+"$";
		var myrxp = new RegExp(regex);
		var check = (myrxp.test(val));
		if (check!=true) {
			return false;
		}
		else {
			return true;
		}
	}
}

/*
validates formfields if they have a value or not
to check for other options do the following
specialfields = new Object();
specialfields.fieldname = new Object();
specialfields.fieldname.check1 = 'function_to_call,error_message';
specialfields.fieldname.check2 = 'second_function_to_call,second_error_message';
specialfields.another_fieldname = new Object();
specialfields.another_fieldname.check1 = 'function_to_call,error_message';
*/
function validateForm(form,specialfields) {
	var errors = new Array();
	var fields = form.getElementsByTagName('label');
	for (i = 0; i < fields.length; i++) {
		var span = fields[i].getElementsByTagName('span')[0];
		if (span && span.firstChild) {
			var label = span.firstChild.data;
			label = label.trim();
			// if there is a '*' in the label - this indicates the inputfield has to be filled
			if (label.charAt(label.length - 1) == '*') {
				label = label.substring(0, label.length - 1).trim();
				// get the inputfield
				var obj_input = fields[i].getElementsByTagName('input');
				if (!obj_input[0])
					obj_input = fields[i].getElementsByTagName('select');
				if (!obj_input[0])
					obj_input = fields[i].getElementsByTagName('textarea');

				// if there is an inputfield
				if (obj_input && obj_input[0]) {
					input = obj_input[0];
					error = false;
					
					// check if the inputfield has a value
					if (!input.value || input.value.trim().length==0) {
						error = true;
						errors.push(label + ' nicht eingegeben');
					}
					
					// check the inputfield for special things (email, ...)
					if (!error && specialfields[input.name]){
						specialfield = specialfields[input.name];
						for (check in specialfield){
							check_function = specialfield[check].split(',')[0];
							check_message = specialfield[check].split(',')[1];
							if (!eval(check_function)(input.value)){
								error = true;
								errors.push(label + ' ' + check_message);
							}
						}
					}

					// on error give the label the className 'error' otherwise delete the className 'error' (if exists)
					if (error) {
						className = fields[i].className;
						if (className.length>0){
							className = className + ' ';
						}
						fields[i].className = className + 'error';
					} else {
			            	className = fields[i].className;
						if (className.indexOf('error')>-1){
								className = className.replace(' error', '');
								className = className.replace('error', '');
								fields[i].className = className;
						}
					}
				}
			}
		}
	}

	return errors;
}

function showFormErrors (errors) {
	error_message = '';
	for (i=0;i<errors.length;i++){
		error_message += errors[i] + '\n';
	}
	alert(error_message);
}