function PrezentDomApi() {
    this.version = '0.1';
    this.eventCache = new PrezentDomApi.EventCache();
    this.actionAttacher = null;
};

// Static domloader variables
PrezentDomApi.domLoad = [];
PrezentDomApi.domLoaderSet = false;

/**
 * TagEvent class.
 * @version 1.0
 */
PrezentDomApi.TagEvent = function (tagName, className, act, func) {
    this.tagName = tagName.toLowerCase();
    this.className = className;
    this.act = act;
    this.func = func;
}
PrezentDomApi.TagEvent.prototype.matches = function(tagName, className) {
    if (tagName.toLowerCase() != this.tagName) {
        return false;
    }
    return (this.className == null || new RegExp(this.className+"([\\W\\s]|$)").test(className));
};

/**
 * ActionAttacher class.
 * attaches events to tags by their tagName / classname.
 * Use actionAttacher.addTagEvent to add an event to a tag / className combination.
 */
PrezentDomApi.ActionAttacher = function() {
    this.tagEvents = [];
    this.counter = 0;
}

/* Runs onload to attach all TagEvents */
PrezentDomApi.ActionAttacher.prototype.attach = function() {
    var tagEvents = this.tagEvents;
    var tags = [], elems, len, j;

    // Loop trough all tagEvents to retreive tag
    for (var k=0; k < tagEvents.length; k++) {
        if (typeof tags[tagEvents[k].tagName] != 'undefined') {
            continue;
        }
        // add HTMLCollection to tags array
        tags[tagEvents[k].tagName] = document.body.getElementsByTagName(tagEvents[k].tagName);
    }

    // Loop trough all tags where events should be attached to
    for (j in tags) {
        elems = tags[j];
        len = elems.length;

        for (var i=0; i < len; i++) {

            // Loop trough events
            for (k=0; k < tagEvents.length; k++) {
                // check if we have a tag- and classname match
                if (tagEvents[k].matches(elems[i].tagName, elems[i].className)) {
                    // Add event on match
                    pDomApi.addEvent(elems[i], tagEvents[k].act, tagEvents[k].func);
                }
            }
        }
    }

};
/* Add tag event to action attacher */
PrezentDomApi.ActionAttacher.prototype.addTagEvent = function (tEvent) {
    this.tagEvents.push(tEvent);
    return this.counter++;
};

PrezentDomApi.prototype.getActionAttacher = function () {
	if (this.actionAttacher) {
		return this.actionAttacher;
	}
	var me = this;
	this.actionAttacher = new PrezentDomApi.ActionAttacher();
	this.addEvent(window, 'domload', function() { me.actionAttacher.attach();});
	return this.actionAttacher;
};

PrezentDomApi.EventCache =  function() {

	var listEvents = [];

	return {
		listEvents : listEvents,
		add : function(node, sEventName, fHandler){
			listEvents.push(arguments);
		},
		flush : function() {
			var i, item;
			for(i = listEvents.length - 1; i >= 0; i = i - 1){
				item = listEvents[i];
				if(item[0].removeEventListener){
					item[0].removeEventListener(item[1], item[2], item[3]);
				};
				if(item[1].substring(0, 2) != "on"){
					item[1] = "on" + item[1];
				};
				if(item[0].detachEvent){
					item[0].detachEvent(item[1], item[2]);
				}
				item[0][item[1]] = null;
			}
		}
	};

};

/* Runs on dom load if needed */
PrezentDomApi.domLoaded = function() {

    if (arguments.callee.done) {
    	return;
    }
    arguments.callee.done = true;

    for (var i = 0;i < PrezentDomApi.domLoad.length;i++) {
        PrezentDomApi.domLoad[i]();
    }
};


/**
 * Sets a classname for element elem, eventually replacing other classname(s)
 * @param   HTMLElement     elem
 * @param   String          className
 * @param   String/Array    replace
 * @since   0.1
 */
PrezentDomApi.prototype.setClassName = function(elem, className, replace) {
    var replaceArr = [className];
    var newClassName = elem.className;

    // determine replace parameter type (note that it can also be undefined, that case is not handled)
    switch ((typeof replace).toLowerCase()) {
        case 'string':
            replaceArr.push(replace);
            break;
        case 'object':
            replaceArr = replaceArr.concat(replace);
            break;
    }

    // replace all classNames in the replaceArray with a space
    for (var i = 0; i < replaceArr.length; i++) {
        newClassName = newClassName.replace(new RegExp("(^|\\s)" + replaceArr[i] + "(\\s|$)", "g"), ' ');
    }
    // set the new classname
    elem.className = newClassName.trim() + (newClassName.length > 0 ? ' ' : '') + className;
};

/**
 * Sets a classname for element elem, eventually replacing other classname(s)
 * @param   Array           elems       Array of HTMLElements
 * @param   String          className
 * @param   String/Array    replace
 * @since   0.1
 */
PrezentDomApi.prototype.setClassNames = function(elems, className, replace) {
    for (var i in elems) {
        this.setClassName(elems[i]);
    }
};

//elem: (string || object) string of elements id, or a reference to the element itself
//act:  (string) eventname without the 'on' prefix. (load, click, mouseover, etc.)
//func: (unquoted string) functionname of the function to execute on event fire.
PrezentDomApi.prototype.addEvent = function(elem, act, func) {

	if (typeof elem == 'string') {
		elem = document.getElementById(elem);
	}

	if (! elem) { return false; }

	if (act == 'domload' && elem == window) {
		this.addDomLoadEvent(func);
	}

	if (window.addEventListener) {
		elem.addEventListener(act, func, false);
		this.eventCache.add(elem, act, func);
	} else if (window.attachEvent) {
		elem["e"+act+func] = func;
		elem[act+func] = function() { elem["e"+act+func](window.event); };
		elem.attachEvent('on'+act, elem[act+func]);
		this.eventCache.add(elem, act, func);
	} else {
		return false;
	}
	return true;
};

PrezentDomApi.prototype.addDomLoadEvent = function(func) {

	PrezentDomApi.domLoad.push(func);
	if (PrezentDomApi.domLoaderSet) {
		return false;
	}

	if (document.addEventListener) {
		document.addEventListener("DOMContentLoaded", PrezentDomApi.domLoaded, null);
	}
	if (/KHTML|WebKit/i.test(navigator.userAgent)) {
		var _timer = setInterval(function()	{
			if (/loaded|complete/.test(document.readyState)) {
				clearInterval(_timer);
				delete _timer;
				PrezentDomApi.domLoaded();
			}
		}, 25);
	}
	/*@cc_on @*/
	/*@if (@_win32)
	var proto = "src='javascript:void(0)'";
	if (location.protocol == "https:") proto = "src=//0";
	document.write("<scr"+"ipt id=__ie_onload defer " + proto + "><\/scr"+"ipt>");
	var script = document.getElementById("__ie_onload");
	script.onreadystatechange = function() {
	    if (this.readyState == "complete") {
	        PrezentDomApi.domLoaded();
	    }
	};
	/*@end @*/
	this.addEvent(window, 'load', PrezentDomApi.domLoaded);
	PrezentDomApi.domLoaderSet = true;
};

//Call this function with the same arguments as you did with AddEvent
//to remove the eventlistener.
PrezentDomApi.prototype.removeEvent = function(elem, act, func) {
	if(typeof elem == 'string') {
		elem = document.getElementById(elem);
	}

	if(!elem) { return false; }

	if(window.removeEventListener) {
		elem.removeEventListener(act, func, false);
	}
	else if(window.detachEvent) {
		elem.detachEvent('on'+act, func);
	}
};

/*
Written by Jonathan Snook, http://www.snook.ca/jonathan
Add-ons by Robert Nyman, http://www.robertnyman.com
Added support for native getElementsByTagName implementation (supported in Firefox 3)
http://ejohn.org/blog/getelementsbyclassname-in-firefox-3/
*/
PrezentDomApi.prototype.getElementsByClassName = function(oElm, strTagName, strClassName){
	var arrReturnElements = [];
	// Check for native getElementsByClassName implementation (FF3, Safari 3.1, Opera 9.5)
	if (oElm.getElementsByClassName) {
	    var arrElements = oElm.getElementsByClassName(strClassName);

	    for(var i=0; i < arrElements.length; i++){
	        if (strTagName == '*' || arrElements[i].tagName.toLowerCase() == strTagName.toLowerCase()) {
	            arrReturnElements.push(arrElements[i]);
	        }
	    }
	    return arrReturnElements;

	}

	var arrElements = (strTagName == "*" && oElm.all) ? oElm.all : oElm.getElementsByTagName(strTagName);

	strClassName = strClassName.replace(/\-/g, "\\-");
	var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	var oElement;
	for (var i=0; i<arrElements.length; i++){
	    oElement = arrElements[i];
	    if(oRegExp.test(oElement.className)){
	        arrReturnElements.push(oElement);
	    }
	}
	return arrReturnElements;
};

PrezentDomApi.prototype.hasClassName = function(oElm, strClassName) {
    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
    return oRegExp.test(oElm.className);
};

PrezentDomApi.prototype.showHide = function(elem, hide, show) {
    var hide = hide == undefined ? 'hide' : hide;
    var show = show == undefined ? 'show' : show;

    elem.className = new RegExp(hide).test(elem.className) ?
        elem.className.replace(new RegExp(hide), show) :
        elem.className.replace(new RegExp('\\s?'+ show), '') + ' ' + hide;

};

PrezentDomApi.prototype.preventDefault = function(event) {
    if (event.preventDefault) {
        event.preventDefault();
    } else {
        event.returnValue = false;
    }
};

var pDomApi = new PrezentDomApi();
//flush events
pDomApi.addEvent(window, 'unload', pDomApi.eventCache.flush);

/* Helper functions */
String.prototype.trim = function() {
    var str = this.replace(/^\s\s*/, ''),
        ws = /\s/,
        i = str.length;
    while (ws.test(str.charAt(--i)));
    return str.slice(0, i + 1);
};

/*
 * $Id: common.js 2530 2009-10-12 09:02:16Z joris $
 */

function newWindow(mypage,myname,w,h,features) {
	if(screen.width){
		var winl = (screen.width-w)/2;
		var wint = (screen.height-h)/2;
	}
	else{winl = 0;wint =0;}
	if (winl < 0) winl = 0;
	if (wint < 0) wint = 0;

	var settings = 'height=' + h + ',';
	settings += 'width=' + w + ',';
	settings += 'top=' + wint + ',';
	settings += 'left=' + winl + ',';
	settings += features;
	win = window.open(mypage,myname,settings);
	win.window.focus();
}

if ( typeof window.eId != 'function' ) {
	function eId() {
        var elements = new Array();

        for (var i = 0; i < arguments.length; i++) {
            var element = arguments[i];
            if (typeof element == 'string') { element = document.getElementById(element); }

            if (arguments.length == 1) { return element; }

            elements.push(element);
        }

        return elements;
	};
}

function getObj(name) {
  if (document.getElementById) {
    this.obj = document.getElementById(name);
    this.style = document.getElementById(name).style;
  }
  else if (document.all) {
    this.obj = document.all[name];
    this.style = document.all[name].style;
  }
  else if (document.layers) {
    this.obj = document.layers[name];
    this.style = document.layers[name];
  }
}

// Start actionattacher on window load
var actionAttacher = pDomApi.getActionAttacher();
//pDomApi.addEvent(window, 'domload', function() { actionAttacher.attach(); });
actionAttacher.addTagEvent(new PrezentDomApi.TagEvent('a', 'printPage', 'click', function(e) {
	window.print();
	pDomApi.preventDefault(e);
}));
actionAttacher.addTagEvent(new PrezentDomApi.TagEvent('a', 'external', 'click', function(e) {
    if (!e) { var e = window.event; } targ = e.target ? e.target : e.srcElement;
    while (targ.nodeType != 1 || targ.tagName.toLowerCase() != 'a') {
    	targ = targ.parentNode;
    }
    window.open(targ.href);
    pDomApi.preventDefault(e);
}));

actionAttacher.addTagEvent(new PrezentDomApi.TagEvent('select','langSelect', 'change', function(e) {

	var event = e || window.event;
	var target = event.target ? event.target : event.srcElement;

	href = location.protocol + '//' + location.hostname + location.pathname;

	var lang = target.value;
	var searchStr = location.search;
	if ( location.search.search(/lang=[a-z]{2}/) != -1 ) {
		searchStr = location.search.replace(/lang=[a-z]{2}/,'lang=' + lang);
	} else {
		searchStr = ((searchStr == '') ? '?lang=' : searchStr + '&lang=') + lang;
	}
	window.location = href + searchStr;
}));
// make a submit button from a link
actionAttacher.addTagEvent(new PrezentDomApi.TagEvent('a','submit', 'click', function(e) {

	pDomApi.preventDefault(e);

	var rel = this.getAttribute('rel');
	if (rel.length > 0) {
		eId(rel).submit();
	}
}));

// Password field in user menu
var textStore = {};

function wipeTextOnFocus(input) {

    if (input.value) {
    	textStore[input.getAttribute('id')] = input.value;
    } else if (input.alt && input.alt.length > 0) {
    	textStore[input.getAttribute('id')] = input.alt;
    	input.value = input.alt;
    } else {
    	textStore[input.getAttribute('id')] = '';
    }

    pDomApi.addEvent(input, 'focus', function(e) {
        if (input.value == textStore[input.getAttribute('id')]) {
            input.value = '';
        }
    });

    pDomApi.addEvent(input, 'blur', function(e) {
         if(input.value == '') {
            input.value = textStore[input.getAttribute('id')];
        }
    });
}

function replacePasswordBox(passwd) {
    var text = document.createElement('input'); // create new input element
    text.setAttribute('type', 'text'); // type = text
    text.setAttribute('value', passwd.getAttribute('value'));
    text.setAttribute('tabIndex', passwd.getAttribute('tabIndex'));
    text.className = passwd.className;
    text.setAttribute('readonly', 'readonly');
    passwd.setAttribute('value', '');
    //passwd.setAttribute('class', 'password');
    passwd.parentNode.insertBefore(text, passwd);
    passwd.parentNode.removeChild(passwd);

    pDomApi.addEvent(text, 'focus', function (e) {
        text.parentNode.insertBefore(passwd, text);
        passwd.parentNode.removeChild(text);
        passwd.focus();
    });

    pDomApi.addEvent(passwd, 'blur', function(e) {
        if (passwd.value == '') {
            passwd.parentNode.insertBefore(text, passwd);
            passwd.parentNode.removeChild(passwd);
        }
    });
}


var stdEmailContent = '';
function newsletterFocus() {
	elem			= document.forms.newsletterBlock.email;
	stdEmailContent	= document.forms.newsletterBlock.email.value;

	pDomApi.addEvent(elem, 'focus', function(e) {
		if (!e) { var e = window.event; } targ = e.target ? e.target : e.srcElement;

		if (targ.value == stdEmailContent) {
			targ.value = '';
		}
	});

	pDomApi.addEvent(elem, 'blur', function(e){
		if (!e) { var e = window.event; } targ = e.target ? e.target : e.srcElement;

		if (targ.value == '') {
			targ.value = stdEmailContent;
		}
	});


}

// Password field in user menu
pDomApi.addEvent(window, 'domload', function() {
    var passwd;

    var wipeText = ['userMenuEmail', 'evaQuestion'];

    for (var i = 0; i < wipeText.length; i++) {
    	var wipeElem = null;
    	if (wipeElem = eId(wipeText[i])) {
            wipeTextOnFocus(wipeElem);
        }
    }

    if (passwd = eId('userMenuPass')) {
        replacePasswordBox(passwd);
    }

	if (document.forms.newsletterBlock) {
		newsletterFocus();
	}


	// Password field in user menu
	pDomApi.addEvent('userSelect', 'change', function(e) {
		var userId		= this.options[this.selectedIndex].value;
		var redirectUrl = '/portal/logon/loginAsOtherUser.cmd/?userId=' + userId;

		window.location.replace(redirectUrl);
	});

});