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 opacity = 0;
var hoverelement;
var hoverimage;
var newimage_src;
var oldsrc;
var last_element;

function swapNav(element, newimage) {
	oldsrc = element.getElementsByTagName('IMG')[0].src;

	hoverimage = element.getElementsByTagName('IMG')[0];
	newimage_src = newimage;

	hoverelement = element.getElementsByTagName('SPAN')[0];
	changeOpacity = window.setInterval("func_fade_in()", 25);
}

function restoreNav(element) {
	opacity = 0;
	element.getElementsByTagName('IMG')[0].src = oldsrc;

	nav_elements = document.getElementById('nav').childNodes;
	for (i=0; i<nav_elements.length; i++) {
		if (nav_elements[i].childNodes.length > 0) {
			setOpacity(nav_elements[i].getElementsByTagName('SPAN')[0], 0);
		}
	}
	window.clearInterval(changeOpacity);
}

function showSubMenu (element, newimage) {

	if (document.getElementById('startpage')) {
		if (last_element != element) {
			if (newimage) {
				anchor = element.getElementsByTagName('A')[0];
				swapNav(anchor, newimage);
			}
			last_element = element;
		} else {
			setOpacity (element.getElementsByTagName('SPAN')[0], 100);
			element.getElementsByTagName('IMG')[0].src = newimage;
		}
		element.onmouseout = function () {
			if (document.getElementById('startpage')) {
				restoreNav(this);
			}
		};

	} else {

		submenu = element.getElementsByTagName('UL')[0];

		if (last_element != element) {
			setOpacity(submenu, 0);
			submenu.opacity_number = 0;
			last_element = element;
		}
		submenu.style.display = 'block';

		changeOpacity = window.setInterval("func_fade_element_in(submenu)", 30);

		element.onmouseout = function () {
			this.getElementsByTagName('UL')[0].style.display = 'none';
			window.clearInterval(changeOpacity);
		};
	}
}

function func_fade_in () {
	if (opacity < 100 && hoverelement) {
		opacity = opacity+10;
		setOpacity(hoverelement, opacity);
		hoverelement.style.display = 'block';
		if (opacity < 65 && opacity > 55) {
			hoverimage.src = newimage_src;
		}
	} else {
		window.clearInterval(changeOpacity);
	}
}

function func_fade_element_in (element) {
	element.opacity_number += 10;
	if (element.opacity_number <= 100) {
		setOpacity(element, element.opacity_number);
	} else {
		window.clearInterval(changeOpacity);
	}
}

function setOpacity(e,opacity) {
	var o=e.style;
	o.opacity=(opacity/100); //Opera
	o.MozOpacity=(opacity/100); //Mozilla+Firefox
	o.KhtmlOpacity=(opacity/100); //Konqueror
	o.filter="alpha(opacity="+opacity+")"; //IE
}





function displayTeamMemberPic (element, source) {
	if (!document.getElementById('tooltip')) {
		newelement('tooltip');
	}
	var tooltip_box = document.getElementById('tooltip');
	tooltip_box.innerHTML = '<img src=\''+source+'\' alt=\'Foto Mitarbeiter\' />';
	document.onmousemove = getmouseposition;
	tooltip_box.style.display = 'block';

	element.onmouseout = function () {
		closeTip(element);
		oldclassname = element.className.split(' teamhover').join('');
		element.className = oldclassname;
	}
}

function newelement (newid) {
	if (document.createElement) {
		var el = document.createElement('div');
		el.id = newid;
		with (el.style) {
			display = 'block';
			position = 'absolute';
		}
		el.innerHTML = '&nbsp;';
		document.body.appendChild(el);
	}
}

function closeTip (element) {
	document.getElementById('tooltip').style.display = 'none';
}

var ie5 = (document.getElementById && document.all);
var ns6 = (document.getElementById && !document.all);
var offsetx = 12;
var offsety =  8;

function getmouseposition(e) {
	if (document.getElementById) {
		mousex = (ie5)?event.x:(ns6)?clientX = e.clientX:false;
		mousey = (ie5)?event.y:(ns6)?clientY = e.clientY:false;
		var tooltip_box = document.getElementById('tooltip');
		tooltip_box.style.left = (mousex+offsetx+10) + 'px';
		tooltip_box.style.top = (mousey+offsety-10) + 'px';
	}
}




function addClassName(element, newclassname) {
	oldclassname = element.className;
	element.className = oldclassname + ' ' + newclassname;
}



var hiddencontent = new Array('search', 'contactinfo');

function showContent(id) {
	for (i=0; i<hiddencontent.length; i++) {
		if (id != hiddencontent[i]) {
			document.getElementById(hiddencontent[i]).style.display = 'none';
		}
	}
	element = document.getElementById(id);
	if (element.style.display != 'block') {
		element.style.display = 'block';
	} else {
		element.style.display = 'none';
	}
}


function init_news() {
	var divs = document.getElementsByTagName('DIV');
	var news_preview;
	var tmp_content;
	var linktip_content;

	for (i=0; i<divs.length; i++) {
		if (divs[i].className == 'news_preview') {
			news_preview = divs[i];
		}
	}

	entities = news_preview.getElementsByTagName('DIV');
	for (i=0; i<entities.length; i++) {
		entities[i].getElementsByTagName('P')[0].style.display = 'none';

		tmp_content = entities[i].getElementsByTagName('P')[0].innerHTML.split('<SPAN ')[0];
		tmp_content = tmp_content.split('<span ')[0].split(" ").join("");

		if (tmp_content != '' && escape(tmp_content) != '%0A%0A') {
			entities[i].getElementsByTagName('A')[0].onmouseover = function() {
				display_news_tooltip(this);
			}
		}

	}
}

function display_news_tooltip (element) {
	if (!document.getElementById('tooltip')) {
		newelement('tooltip');
	}
	var tooltip_box = document.getElementById('tooltip');
	tooltip_box.className = 'tooltip_news';

	var tooltip_content = element.parentNode.parentNode.getElementsByTagName('P')[0].innerHTML;
	tooltip_content = tooltip_content.split('<span ')[0].split('<SPAN ')[0];

	tooltip_box.innerHTML = tooltip_content;
	document.onmousemove = getmouseposition;
	tooltip_box.style.display = 'block';

	element.onmouseout = function () {
		closeTip(element);
	}
}




// 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);
}


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";
	fenster = window.open(url, 'win', attrib);
	return false;
}