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;


// 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;
}







/*-- add/remove class --*/

	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(' ');
	}


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

	var navImagesNormal = new Array();
	var navImagesHover = new Array();
	function init_nav() {
		if(document.getElementById('nav')) {
			var nav = document.getElementById('nav');
			var lis = nav.getElementsByTagName('li');
			for(var i = 0; i < lis.length; i++) {
				if(lis[i].parentNode.id == 'nav') {
					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];

						// News-Archiv bei mouseover im IE6 ausblenden
						if (navigator.appVersion.indexOf('MSIE 6.') > -1 && document.getElementById('news_selection'))
							document.getElementById('news_selection').style.display = 'none';
					}

					lis[i].onmouseout = function() {
						removeClass(this, 'hover');
						var img = this.getElementsByTagName('img');
						if(img[0] && navImagesNormal[this.number])
							img[0].src = navImagesNormal[this.number];

						// News-Archiv bei mouseout im IE6 einblenden
						if (navigator.appVersion.indexOf('MSIE 6.') > -1 && document.getElementById('news_selection'))
							document.getElementById('news_selection').style.display = 'block';
					}
					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() {};
					}

					// Title-Hack fuer Submenue auf FF/Mac
					var anchors = lis[i].getElementsByTagName('A');
					for (j=0; j<anchors.length; j++) {
						anchors[j].title="";
					}
				}
			}
		}
	}


function domready() {
	init_nav();
}