var window_oldonload = window.onload;
window.onload = function() {
    window_loaded = true;
    if (window_oldonload){
        window_oldonload();
    }
}

window.onresize = window_onresize;
function window_onresize(){
    if (window_loaded){
        if (myGallery && Gallery_started){
            myGallery.onResize();
        }
    }
}

// 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, '');
}

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.trim();
			// if there is a '*' in the label - this indicates the inputfield has 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 || input.value.trim().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);
}

function hideSelectBoxes(){
    selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) { selects[i].style.visibility = "hidden";}
}


function showSelectBoxes(){
    selects = document.getElementsByTagName("select");
    for (i = 0; i != selects.length; i++) { selects[i].style.visibility = "visible";}
}


var popupmenuoldonload = window.onload;
window.onload = function() {
	var nav = document.getElementById('navigation');
	var uls = nav.getElementsByTagName('UL');
	for(var i = 0; i < uls.length; i++)
		new xMenu1(uls[i], 0, 'mouseover');
	if(popupmenuoldonload)
		popupmenuoldonload();
}

function xMenu1(menu, mouseMargin, openEvent) {
	var isOpen = false;
	var oldover, oldout, a, aClassName, img;
	if (menu) {
		xAddEventListener(menu.parentNode, openEvent, onOpen, false);
		a = menu.parentNode.firstChild;
                aClassName = a.className;
                img = a.firstChild;
		if(img)
			if (img.onmouseover) {
				oldover = img.onmouseover;
				img.onmouseover = '';
			}
	}

	function onOpen() {
		if (!isOpen) {
			a.className = 'hover';
                        xShow(menu);
			HideSelects(xPageX(menu), xPageY(menu), xWidth(menu), xHeight(menu));
			xAddEventListener(document, 'mousemove', onMousemove, false);
			isOpen = true;
			if (oldover) {
				oldover.apply(img, arguments);
				if (!oldout)
					oldout = img.onmouseout;
				img.onmouseout = function () { };
			}
		}
	}
	function onMousemove(ev) {
		var e = new xEvent(ev);
		contains = (xHasPoint(menu, e.pageX, e.pageY, -10, 0, 0, 0) || xHasPoint(menu.parentNode, e.pageX, e.pageY, -mouseMargin));
		if(!contains) {
			var submenus = menu.getElementsByTagName('UL');
			for(var i = 0; i < submenus.length; i++)
				if(xHasPoint(submenus[i], e.pageX, e.pageY, -mouseMargin)) {
					contains = true;
					break;
				}
		}
		if(!contains) {
                        a.className = aClassName;
			xHide(menu);
			HideSelects(0, 0, 0, 0);
			xRemoveEventListener(document, 'mousemove', onMousemove, false);
			isOpen = false;
			if (oldout)
				oldout.apply(img, arguments);
		}
	}
}

var sel;
function HideSelects(x,y,w,h) {
	if(xIE4Up && !xMac) {
		var selx, sely, selw, selh, i
		if(!sel)
			sel = document.getElementsByTagName("SELECT");
		for(i = 0; i < sel.length; i++) {
			selx = xPageX(sel[i]);
			sely = xPageY(sel[i]);
			selw = sel[i].offsetWidth;
			selh = sel[i].offsetHeight;
			sel[i].style.visibility = (selx + selw > x && selx < x + w && sely + selh > y && sely < y + h) ? "hidden" : "visible";
		}
	}
}

slidepics_init_oldonload = window.onload;
window.onload = function () {
    obj_slidepics = document.getElementById('slidepics');
    if (obj_slidepics){
        current_slidepic = 0;
        slidepictures = new Array();
        slidepictures_loaded = new Object();
        var col_img = obj_slidepics.getElementsByTagName('img');
        if (col_img.length > 0){
            slidepictures.push(col_img[0].id);
            slidepictures_loaded[col_img[0].id] = new Object();
            slidepictures_loaded[col_img[0].id].loaded = true;
            slidepictures_loaded[col_img[0].id].loading = false;
            slidepictures_loaded[col_img[0].id].src = col_img[0].src;
            slidepictures_loaded[col_img[0].id].obj = col_img[0];
            $(slidepictures_loaded[col_img[0].id].obj);
        }
        var col_a = obj_slidepics.getElementsByTagName('a');
        for (i=0;i<col_a.length;i++) {
            slidepictures.push(col_a[i].rel);
            slidepictures_loaded[col_a[i].rel] = new Object();
            slidepictures_loaded[col_a[i].rel].loaded = false;
            slidepictures_loaded[col_a[i].rel].loading = false;
            slidepictures_loaded[col_a[i].rel].src = col_a[i].href;
        }
        if (slidepictures.length>1) {
            slidepics_handler();
        }
    }
    if (slidepics_init_oldonload){
        slidepics_init_oldonload();
    }
}

function slidepics_handler() {
    next_slidepic = current_slidepic + 1;
    if (next_slidepic>=slidepictures.length){
        next_slidepic = 0;
    }
    current_slidepic_id = slidepictures[current_slidepic];
    next_slidepic_id = slidepictures[next_slidepic];
    if (slidepictures_loaded[next_slidepic_id].loaded){
        if (slidepictures_loaded[current_slidepic_id]){
            slidepictures_loaded[current_slidepic_id].obj.effects({duration:1000}).start({'opacity':[1,0]});
        }
        slidepictures_loaded[next_slidepic_id].obj.effects({duration:1000}).start({'opacity':[0,1]});
        if (current_slidepic>=slidepictures.length-1){
            current_slidepic = 0;
        }else{
            current_slidepic++;
        }
        window.setTimeout(slidepics_handler,6000);
    }
    else{
        if (!slidepictures_loaded[next_slidepic_id].loading){
            slidepictures_loaded[next_slidepic_id].loading = true;
            temp_obj = document.createElement('img');
            temp_obj.id = next_slidepic_id;
            temp_obj.src = slidepictures_loaded[next_slidepic_id].src;
            temp_obj.alt = '';
            temp_obj.style.visibility = 'hidden';
            obj_next_slidepic = obj_slidepics.appendChild(temp_obj);
            obj_next_slidepic.onload = function (event) { slidepics_loadhandler(this); };
        }
        window.setTimeout(slidepics_handler,5000);
    }
}

function slidepics_loadhandler(obj) {
    slidepictures_loaded[obj.id].obj = obj;
    $(slidepictures_loaded[obj.id].obj);
    slidepictures_loaded[obj.id].loaded = true;
    slidepictures_loaded[obj.id].loading = false;
}