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

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

/*-- trim --*/
String.prototype.trim = function() {
	return this.replace(/(^\s*)|(\s*$)/g, '');
}

/*-- check e-mail --*/
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;
		}
	}
}

/*-- validate form --*/
function validateForm(form,specialfields) {
	var errors = new Array();
	var fields = form.getElementsByTagName('span');
	for (i = 0; i < fields.length; i++) {
		var span = fields[i].getElementsByTagName('label')[0];
		if (span && span.firstChild) {
			var label = span.firstChild.data;
			label = label.trim();
			if (label.charAt(label.length - 1) == '*') {
				label = label.substring(0, label.length - 1).trim();
				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 (obj_input && obj_input[0]) {
					input = obj_input[0];
					error = false;
					if (!input.value || input.value.trim().length==0) {
						error = true;
						errors.push(label);
					}
					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);
							}
						}
					}
					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;
}
myObjects = new Object();
function showFormErrors (errors, form) {
	error_message = '';
	if (form) {
		$(form);
		error_message = '<strong>Diese Felder müssen ausgefüllt werden:</strong><ul>';
		for (i=0;i<errors.length;i++) {
			error_message += '<li>' + errors[i] + '</li>';
		}
		error_message += '</ul>';
		if (!myObjects.errorDiv) {
			myObjects.errorDiv = new Element('div', {'id':'formErrors'});
			myObjects.errorDiv.injectTop(form);
		}
		myObjects.errorDiv.innerHTML = error_message;
		location.href='#formErrors';
	}
	else {
		for (i=0;i<errors.length;i++) {
			error_message += errors[i] + '\n';
		}
	alert(error_message);
	}
}

/*-- popup --*/
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;
}

/*-- title fix --*/
window.addEvent('domready', function() {
	obj = $$('#nav a').each(function(item){
		item.removeAttribute('title');
	});
});

/*-- navigation --*/
window.addEvent('domready', function() {
	if (document.getElementById('nav')) {
		var nav = document.getElementById('nav');
		var imgs = nav.getElementsByTagName('img');
		for(i=0; i<imgs.length; i++) {
			imgs[i].removeAttribute('onmouseover');
			if(imgs[i].src.indexOf('_n.') > -1) {
				imgs[i].onmouseover = function(e) {
					this.src = this.src.split('_n').join('_h');
				}
				imgs[i].onmouseout = function(e) {
					this.src = this.src.split('_h').join('_n');
				}
			}
		}
	}
});

/*-- ordination --*/
var active_gallery = 0;
function changeActiveGallery(id) {
	active_gallery = id;
	return false;
}
function showGallery(id) {
	for (i=0; i<gallerypix.length; i++) {
		document.getElementById('galpic_'+gallerypix[i]).style.display='none';
	}
	document.getElementById('galpic_'+gallerypix[id]).style.display='block';
	return true;
}