/**
 * DynamicIframe Version 0.8
 * by Mathias Karstaedt, Birger Pannwitt
 */


/*
 * Es muss festgestellt werden, ob das prototyp.js vorhanden ist
 */
var prototypeExists = true;

try {
	if (null!=Abstract && Abstract.TimedObserver) {
		prototypeExists = true;
	}
	else {
		prototypeExists = false;
	}	
} catch (e) {
	prototypeExists = false;
	//alert('prototype not exists! ' + e);
}

if (prototypeExists) {

	var IframeObserver = Class.create(Abstract.TimedObserver, {
		getValue: function() {
			try{
				var iframeWindow = (this.element.contentWindow || this.element.contentDocument.defaultView);
				var iframeHtmlElement = iframeWindow.document.documentElement;
				var iframeContentHeight = (document.all) ?  iframeWindow.document.body.scrollHeight + 50 : iframeHtmlElement.offsetHeight;
				var parent = this.element.parentNode;
				return iframeContentHeight + parent.getWidth();
			}catch(e){}
		}
	});
	
	var DynamicIframe = Class.create({
		initialize: function(iframe) {
			this.iframe = $(iframe);
			this.parent = this.iframe.parentNode;
			Event.observe(this.iframe, 'load', this.resizeIframe.bind(this));
			
			if (Prototype.Browser.IE6) {
				// 25.08.2009 Birger : macht im IE6 Probleme
				// Event.observe(this.iframe, 'resize', this.resizeIframe.bind(this));
			}
			else {
				Event.observe(this.iframe, 'resize', this.resizeIframe.bind(this));
			}
			Event.observe(this.iframe, 'load', this.scrollToTop.bind(this));
		},
		
		scrollToTop: function() {		
			$(parent).window.scrollTo(0, 0);
		},
		
		resizeIframe: function() {
			var parentDimensions = $(this.parent).getDimensions();
			$(this.iframe).setStyle({
				'width': "100%"/*parentDimensions.width + "px"*/,
				'overflow': "hidden"
			});
			try {
				var iframeWindow = (this.iframe.contentWindow || this.iframe.contentDocument.defaultView);
				var iframeHtmlElement = iframeWindow.document.documentElement;
				var iframeContentHeight = (document.all) ?  iframeWindow.document.body.scrollHeight + 50 : iframeHtmlElement.offsetHeight;
				$(this.iframe).setStyle({
					'height': iframeContentHeight + "px"
				});
			} catch (e) {}
			if (!this.iframe.resizeListener) this.iframe.resizeListener = new IframeObserver(this.iframe, 0.2, this.resizeIframe.bindAsEventListener(this));
		}
	});


	/**
	 * LPMenu Version 0.1
	 * by Mathias Karstaedt
	 */
	
	var LPMenu = Class.create({
	
		initialize: function(menuElement) {
			this.menuElement = $(menuElement);
			if (this.menuElement) {
				this.initULElement(this.menuElement);
			}
		},
	
		initULElement: function(ul) {
			var self = this;
			//Alle li durchlaufen
			ul.childElements().each(function(li) {
				li.parentUl = ul;
				//Schauen ob es untermenupunkte gibt
				var subUl = li.getElementsBySelector("ul").first();
				if (subUl) {
					li.subUl = subUl;
					subUl.hide();
					subUl.parentLi = li;
					self.initULElement(subUl);
				}
				//Schauen ob es ein Link gibt
				var link = self.getMenuItemLink(li);
				if (link) {
					if (link.hash) Event.observe(link, "click", function() {
						subUl.toggle();
					});
					if (link.href == document.location.href) {
						self.activateMenuItem(li);
					}
				}
			});
		},
		
		getMenuItemLink: function(li) {
			return li.getElementsBySelector("a").first();
		},
	
		activateMenuItem: function(itemId) {
			var li = $(itemId);
			if (li) 
				this.activate(li);
		},
		
		activate: function(li) {
			if (this.oldMenuItem) 
				this.deactivate(this.oldMenuItem); 
				
			this.openPath(li);
			var link = this.getMenuItemLink(li);
			if (link) 
				link.addClassName("active");
			this.oldMenuItem = li;
		},
		
		deactivate: function(li) {
			var link = this.getMenuItemLink(li);
			if (link) link.removeClassName("active");
			this.closePath(li);
		},
	
		openPath: function(li) {
			li.parentUl.show();
			if (li.subUl) li.subUl.show();
			if (li.parentUl.parentLi) this.openPath(li.parentUl.parentLi);
		},
		
		closePath: function(li) {
			if (li.subUl) li.subUl.hide();
			if (li.parentUl.parentLi) this.closePath(li.parentUl.parentLi);
		}
	});

}


function editPage() {
	var currentLocation = document.location.href;
	if (currentLocation.indexOf('?')>0) {
		document.location.href = currentLocation + "&" + "edit=true";
	}
	else {
		document.location.href = currentLocation + "?" + "edit=true";
	}
}


function openWindow(url, target, options) {
	if (null==options)
		options = '';
	window.open(url, '_blank', options);
	return false;
}

/**
 * Prüft, ob die übergebene Emailadresse gültig ist.
 * @param true | false
 * @return
 */
function isValidEmail(email) {
	var isValid = email != "" && email.match(/^[A-Z0-9._%-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i);
	return isValid;
}