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

/* MEMO: create a list to preload! */
function swapImageChildren(element, newimage) {
    var oldsrc = element.src;
    element.src = newimage;

    if(element.onmouseout == undefined) {
        element.onmouseout = function () { 
            swapImageChildren(element, oldsrc); 
        }
    }
}

/*adds a .lihover class to every on mouseover to ever li in .nav*/
window.addEvent('domready', function() { 

    var iframes = $$('iframe');
    if(iframes[0]) {
        var splitlocation = document.location.href.split('#');
        if(splitlocation[1]) {
            iframes[0].src = iframes[0].src + '#' + splitlocation[1];
        }
    }
});


// 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;
		}
	}
}

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 + ' ' + notfilled);
					}
					
					// 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;
}

function hidesidepic() {



    if(document.getElementById("sitepic")) {

        document.getElementById("sitepic").style.display = 'block';
    
        var theWidth, theHeight;
        // Window dimensions:
        if (window.innerHeight) { theHeight=window.innerHeight; }
        else if (document.documentElement && document.documentElement.clientHeight) { theHeight=document.documentElement.clientHeight; }
        else if (document.body) { theHeight=document.body.clientHeight; }
    //alert(theHeight);
    //698
        if(theHeight<715) {
                document.getElementById("sitepic").style.display = 'none';
        }
    
    }
}

window.addEvent('domready', function() { 
	hidesidepic();
	init_fontsize();
	init_nav();

	if($('startpage')) {
		var sujets = $('random_sujets').getChildren('a');
		var sujets_imgs = $('random_sujets_images').getChildren('a');
		var datenow = new Date();
		var chosen = Math.floor((datenow.getDate()+datenow.getYear()+datenow.getMonth()) % sujets.length);
		var chosenlink = sujets[chosen].href;
		var chosenimg = sujets_imgs[chosen].href;
		var link = $('sujet').getElement('a');
		link.href = chosenlink;
		var img = new Element('img');
		img.src = chosenimg;
		img.inject(link, 'bottom');
	}
});

window.onresize = hidesidepic;

/* -- FONT SIZE CHANGER -- */
var defaultSize = 11;
var previousStep = 2;
function getCurrentFontSize() {
	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);
	fontsize = (parseInt(fontsize[1]));
	return(fontsize);
}

/* change the font-size of the body-tag*/
function init_fontsize() {
	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) document.getElement('body').setStyle('fontSize', c.substring(nameEQ.length, c.length));
	}

	var fontsize = getCurrentFontSize();
	previousStep = (fontsize - 10);
}

function changeFontSize(factor) {
	var fontsize = getCurrentFontSize();
	var newsize = fontsize + factor;

	document.getElement('body').setStyle('fontSize', newsize);
	document.cookie = "fontsize=" + newsize + "px; path=/";
	document.getElementById('content').setStyle('paddingRight', 0);
	setTimeout("document.getElementById('content').innerHTML = document.getElementById('content').innerHTML; 	document.getElementById('content').setStyle('paddingRight', 3);", 10);
}

function resetFontSize() {
	document.getElement('body').setStyle('fontSize', defaultSize);
	document.cookie = "fontsize=" + defaultSize + "px; path=/";
	setTimeout("document.getElementById('content').innerHTML = document.getElementById('content').innerHTML; 	document.getElementById('content').setStyle('paddingRight', 3);", 10);
}

/*-- swap image --*/

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

/*-- nav init --*/

var navImagesNormal = new Array();
var navImagesHover = new Array();
function init_nav() {
	var licount = 0;
	$$('.nav').each(function(nav, n) {
	nav.getChildren('li').each(function(li, i) {
		li.number = licount;
		licount++;
		li.addEvent('mouseenter', function() {
			this.addClass('hover');
			var img = this.getElement('img');
			if(img && navImagesHover[this.number])
				img.src = navImagesHover[this.number];
		});
		li.addEvent('mouseleave', function() {
			this.removeClass('hover');
			var img = this.getElement('img');
			if(img && navImagesNormal[this.number])
				img.src = navImagesNormal[this.number];
		});
		var img = li.getElement('img');
		if(img && img.onmouseover) {
			navImagesNormal[li.number] = img.src;
			img.onmouseover();
			navImagesHover[li.number] = img.src;
			img.onmouseout();
			img.onmouseover = function() {};
			img.onmouseout = function() {};
		}
	});
	});
}