//Diverse Elemente bei kleiner Fenstergröße verändern
function check_resolution() {
	//array aus IDs die ausgeblendet werden sollen
	var array = new Array();
	var obj;

	if (document.body.offsetWidth < 995) {
		for(i = 0; i < array.length; i++) {
			obj = document.getElementById(array[i])
			if(obj)
				obj.style.display = 'none'
		}
	} else {
		for(i = 0; i < array.length; i++) {
			obj = document.getElementById(array[i])
			if(obj)
				obj.style.display = ''
		}
	}
}
window.onresize = window.onload = check_resolution;

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 xMenu1(menu, mouseMargin, openEvent) {
	var isOpen = false;
        var oldover, oldout, aObj, aClassName, img;
	if (menu) {
		xAddEventListener(menu.parentNode, openEvent, onOpen, false);
		aObj = menu.parentNode.firstChild;
                aClassName = aObj.className;
                img = aObj.firstChild;
		if(img)
			if (img.onmouseover) {
				oldover = img.onmouseover;
				img.onmouseover = '';
			}
	}
	function onOpen() {
		if (!isOpen) {
			aObj.className = 'hover';
                        xShow(menu);
			HideSelects(xPageX(menu), xPageY(menu), xWidth(menu), xHeight(menu));
			xAddEventListener(document, 'mousemove', onMousemove, false);
			isOpen = true;
			if (oldover) {
				oldover.apply(img, arguments);
				if (!oldout)
					oldout = img.onmouseout;
				img.onmouseout = function () { };
			}
		}
	}
	function onMousemove(ev) {
		var e = new xEvent(ev);
		contains = (xHasPoint(menu, e.pageX, e.pageY, -mouseMargin) || xHasPoint(menu.parentNode, e.pageX, e.pageY, -mouseMargin));
		if(!contains) {
			var submenus = menu.getElementsByTagName('UL');
			for(var i = 0; i < submenus.length; i++)
				if(xHasPoint(submenus[i], e.pageX, e.pageY, -mouseMargin)) {
					contains = true;
					break;
				}
		}
		if(!contains) {
                        aObj.className = aClassName;
			xHide(menu);
			HideSelects(0, 0, 0, 0);
			xRemoveEventListener(document, 'mousemove', onMousemove, false);
			isOpen = false;
			if (oldout)
				oldout.apply(img, arguments);
		}
	}
}

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);
		}
	}
}, 10);

function changeFontSize(factor) {
	if (document.body.currentStyle)
		var fontsize = document.body.currentStyle['fontSize'];
	else if (window.getComputedStyle)
		var fontsize = document.defaultView.getComputedStyle(document.body, null).getPropertyValue('font-size');

	fontsize = /(\d+)(.+)/.exec(fontsize);
	document.body.style.fontSize = (parseInt(fontsize[1]) + factor) + fontsize[2];

	document.cookie = "fontsize=" + document.body.style.fontSize + "; path=/";
	
	setTimeout('document.getElementById(\'content\').innerHTML = document.getElementById(\'content\').innerHTML', 10);
}

function resetFontSize() {
	document.body.style.fontSize = '';
	document.cookie = "fontsize=;path=/";
	setTimeout('document.getElementById(\'content\').innerHTML = document.getElementById(\'content\').innerHTML', 10);
}

// 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);
}


/*printjob*/
function printjob() {
	if (document.all && (navigator.appVersion.indexOf("Mac") != -1)) {
		self.focus();
		alert("Drucken-Funktion unter Macintosh nicht moeglich! \nBitte verwenden Sie Datei/Drucken");
	} else {
		if (document.all && navigator.appVersion.substring(22,23)==4) {
			self.focus();
			var OLECMDID_PRINT = 6;
			var OLECMDEXECOPT_DONTPROMPTUSER = 2;
			var OLECMDEXECOPT_PROMPTUSER = 1;
			var WebBrowser = '<object id="WebBrowser1" width="0" height="0" classid="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2"></object>';
			document.body.insertAdjacentHTML('beforeEnd',WebBrowser);
			WebBrowser1.ExecWB(OLECMDID_PRINT,OLECMDEXECOPT_DONTPROMPTUSER);
			WebBrowser1.outerHTML = '';
		} else{
			self.focus();
			window.print();
		}
	}
}	
function popup(url, typ, para1, width, height) {
	attrib = "";
	Y = (screen.height - width) / 2;
	X = (screen.width - height) / 2;
	X = Math.round(X);
	Y = Math.round(Y);
	if (para1 == 'CENTER') attrib += 'height=' + height + ',width=' + width + ',top=' + Y + ',left=' + X;
	if (typ == 'TYP1') attrib += ",scrollbars=no";
	if (typ == 'TYP2') attrib += ",scrollbars=yes";
	if (typ == 'TYP3') attrib += ",scrollbars=yes,menubar=yes";
	x = Math.random();
	fenster = window.open(url, 'win', attrib);
	return false;
} 
function judf_link_gifchange(obj,over){
	
	if (obj){
		obj_img = obj.getElementsByTagName('IMG')[0];
		file = obj_img.src;
		tmp_img= new Image();
		if (over){
			tmp_img.src = file.replace(/2*\.gif/,'2.gif');
		}else{
			tmp_img.src = file.replace(/2*\.gif/,'.gif');
		}
		obj_img.src = tmp_img.src;
	}
}

var historicOnload = window.onload;
window.onload = function() {
	var news_text = document.getElementById('news_text');
	if(news_text)
	{
		var children = news_text.getElementsByTagName('div');
		var countChildren = 0;

		for(i=0; i<children.length; i++)
		{
			if(children[i].className == 'entity')
			{
				countChildren++;
			}
		}

		var chosenChild = Math.floor(Math.random() * countChildren);
		countChildren = 0;

		for(i=0; i<children.length; i++)
		{
			if(children[i].className == 'entity')
			{
				if(countChildren == chosenChild)
				{
					children[i].style.display = 'block';
				}

				countChildren++;
			}
		}
	}

	if(historicOnload)
		historicOnload();
}

function CheckSearch(form){
	if(form.saddr.value == "")
	{
		alert("Startadresse fehlt!");
		form.saddr.focus();
		return false;
	}
	else
	{    		
		popup('http://maps.google.de/maps?f=d&amp;hl=de', 'TYP1', 'CENTER', 800, 600);
	}
}