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

function swapImage(element, newimage) {
	var oldsrc = element.src
	element.src = newimage
	if (!element.onmouseout)
		element.onmouseout = function (event) { swapImage(this, oldsrc); };
}

// Leerzeichen hinten und vorne bei einem String Objekt wegschneiden
function trim(string) {
	return string.replace(/^\s*|\s*$/,'');
}

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) {
			var label = span.firstChild.data;
			label = label.replace(/^\s*/, '');
			label = label.replace(/\s*$/, '');
			// if there is a '*' in the label - this indicates the inputfield to have to be filled
			if (label.charAt(label.length - 1) == '*'){
				// 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 || trim(input.value).length==0) {
						error = true;
						errors.push(label.substring(0, label.length -1) + ' 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.substring(0, label.length -1) + 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);
}

var rechner= new Array();
rechner['JAGL']="http://www.atikon.at/jagl/?ID=";
rechner['GBR']="http://www.atikon.at/geb/?ID=";
rechner['KBR']="http://www.dioezese-linz.or.at/dfk/kirchenbeitrag/berechnungonline.asp";
rechner['UID']="http://www.bmf.gv.at";
rechner['NL']="http://www.atikon.at/rechner/newsletter.php?ID=";
rechner['SWE']="http://www.atikon.at/rechner/swempfehlung.php?ID=";
rechner['LV_AN']="http://www.atikon.at/rechner/dn_an.php?ID=";
rechner['LV_AB']="http://www.atikon.at/rechner/dn_ab.php?ID=";
rechner['LV_AEN']="http://www.atikon.at/rechner/dn_aen.php?ID=";
rechner['GMBH']="http://www.atikon.at/rechner/news.php?NS=2&ID=";
rechner['GPERS']="http://www.atikon.at/rechner/news.php?NS=3&ID=";
rechner['GEINZEL']="http://www.atikon.at/rechner/news.php?NS=16&ID=";
rechner['PENSION']="http://www.sva.or.at/sva/home.nsf/map/einstiegpensionsberechnung";
rechner['REMIND']="http://www.atikon.at/rechner/remind.php?ID=";
rechner['GEWINN']="http://www.atikon.at/rechner/gewinn2.php?ID=";
rechner['GVP']=rechner['GEWINN'];
rechner['ONLINEUID']="http://www.europa.eu.int/comm/taxation_customs/vies/de/vieshome.htm";
rechner['ERBSCHAFT']="http://www.atikon.at/rechner/erb.php?ID=";
var rechner_id="1169";

function o_rechner(r_short,typ,hoehe,breite){
	if (!rechner[r_short]) {
		alert('short nicht definiert '+r_short);
		return false;
	}
	Y=(screen.height-hoehe)/2;
	X=(screen.width-breite)/2;
	w="win";
	if (typ==1) {//window.open mit scroll-Leiste
		temp=window.open(rechner[r_short]+rechner_id,w,'height='+hoehe+',width='+breite+',top='+Y+',left='+X+',scrollbars=yes');		   
	}
	if (typ==2) {//window.open ohne scroll-Leiste
		temp=window.open(rechner[r_short]+rechner_id,w,'height='+hoehe+',width='+breite+',top='+Y+',left='+X+',scrollbars=no');		   
	}
	if (typ==3) {//window.open ohne scroll-Leiste
		temp=window.open(rechner[r_short],'blank','');		   
	}		
	if (typ==4) {//window.open mit scroll-Leiste und meneu
		temp=window.open(rechner[r_short]+rechner_id,w,'height='+hoehe+',width='+breite+',top='+Y+',left='+X+',scrollbars=yes,menue=yes');		   
	}
}


function open_function(url,width,height,options) {
	self.msgWindow = open(url, "Window", "width=" + width + ",height=" + height
		+ ",screenX=" + (screen.width-width)/2
		+ ",screenY=" + (screen.height-height)/2
		+ ",dependent=yes"
		+ ",left=" + (screen.width-width)/2
		+ ",top=" + (screen.height-height)/2
		+ options
	);
	if (self.msgWindow) {
		self.msgWindow.focus();
		if (self.msgWindow.opener == null) self.msgWindow.opener = self;
	}
}