/*
 * $Id: util.js 20771 2007-12-19 10:14:59Z niels $
 *
 * Some tools and utils
 */

function GetElement(id)
{
	var x = document.getElementById ? document.getElementById (id) :
					  ((document.all) ? document.all [id] : null);
	return x;
}

function ScrollToElement(elemId)
{
    if (elemId != "") {
	GetElement(elemId).scrollIntoView();
	return true;
    }
    return false;
}

/* returns the next <a> tag element */
function GetNextLinkElement(elem)
{
    elem = elem.nextSibling;
    while (elem.nodeName != "A"){
	elem = elem.nextSibling;
    }
    return elem;
}

/*
 * EMail Address Obfuscation
 *
 * We avoid the "mailto:"-prefix in href so that spambots encounter
 * problems on scanning for email links. We just set correct syntax 
 * onmouseover.
 *
 */

var email_text_at_sign_replacement = '<img class="inword-image" src="/design/nwfj/images/nwfj.de-at-sign.gif" alt="@">';
var email_text_dot_replacement = '<img class="inword-image" src="/design/nwfj/images/nwfj.de-dot.gif" alt=".">';
var email_href_at_sign_replacement = ':dies-durch-einen-Klammeraffen-ersetzen:'; // don't use "@" or "." inside!
var email_href_dot_replacement = ':dies-durch-einen-Punkt-ersetzen:'; // don't use "@" or "." inside!

var email_href_at_sign_replacement_regexp = new RegExp(regexpEscape(email_href_at_sign_replacement),"g");
var email_href_dot_replacement_regexp = new RegExp(regexpEscape(email_href_dot_replacement),"g");
var email_text_at_sign_replacement_regexp = new RegExp(regexpEscape(email_text_at_sign_replacement),"g");
var email_text_dot_replacement_regexp = new RegExp(regexpEscape(email_text_dot_replacement),"g");

function regexpEscape (str)
{
	return escape(str).replace(/\//g,"\\/");
}

function regexpUnEscape (str)
{
	return unescape(str).replace(/\\\//g,"/");
}

function DeObfuscateEmailLinkText(str)
{
    str = escape(str);
    str = str.replace (email_text_dot_replacement_regexp, ".");
    str = str.replace (email_text_at_sign_replacement_regexp, "@");
    return unescape(str);
}

function ObfuscateEmailLinkText(str)
{
    str = str.replace (/\./g, email_text_dot_replacement);
    str = str.replace (/@/g, email_text_at_sign_replacement);
    return str;
}

function DeObfuscateEmailLinkHref(str)
{
    str = escape(str);
    str = str.replace (email_href_dot_replacement_regexp, ".");
    str = str.replace (email_href_at_sign_replacement_regexp, "@");
    return unescape(str);
}

function ObfuscateEmailLinkHref(str)
{
    str = str.replace (/\./g, email_href_dot_replacement);
    str = str.replace (/@/g, email_href_at_sign_replacement);
    return str;
}

function DeObfuscateNextEmailLink(elem)
{
    DeObfuscateEmailLink(GetNextLinkElement(elem));
}

function ObfuscateNextEmailLink(elem)
{
    ObfuscateEmailLink(GetNextLinkElement(elem));
}

function DeObfuscateEmailLink(mailToLink)
{
    DeObfuscateEmailAddressInHref(mailToLink)
    DeObfuscateEmailAddressInInnerHTML(mailToLink)
}

function ObfuscateEmailLink(mailToLink)
{
    ObfuscateEmailAddressInHref(mailToLink)
    ObfuscateEmailAddressInInnerHTML(mailToLink)
}

function DeObfuscateEmailAddressInHref(mailToLink)
{
    // No width implicators for text replacements like "[at]"
    // because they are wider than their substitutes "@"
    if (email_text_at_sign_replacement.indexOf("<") != 0 
        && email_text_dot_replacement.indexOf("<") != 0){
	mailToLink.style.textDecoration = "none";
	mailToLink.style.border = "none";
    }

    var ref = mailToLink.href;
    
    // In case the browser inserts path infomation on the link (w/
    // protocol prefix), we get the shit out of it
    ref = ref.replace(/(http|file).*\//,"");

    // We insert mailto prefix:
    if (ref.indexOf("mailto") == -1)
	ref = "mailto:" + ref;

    // Set values:
    mailToLink.href = DeObfuscateEmailLinkHref(ref);
    mailToLink.title = "eMail-Link (Klick zur Aktivierung Ihres E-Mail-Programms)"

    return true;
}

function ObfuscateEmailAddressInHref(mailToLink)
{
    var ref = ObfuscateEmailLinkHref(mailToLink.href);

    // On the way back we delete the prefix
    ref = ref.replace(/mailto:/,"");

    mailToLink.href = ref;
    return true;
}

function DeObfuscateEmailAddressInInnerHTML(span)
{
    var l = span.innerHTML.length;
    var email = DeObfuscateEmailLinkText(span.innerHTML);

    // if not a tag (like image) we fill the obfuscation sign's space 
    // with whitespace to prevent firing onmouseout events when shortening the link to it's 
    // correct syntax:
    var strippedTagsInEmail = email.replace(/<.*?>/g,"");
    if (strippedTagsInEmail.length > 0){
	var strippedTagsInSpan = span.innerHTML.replace(/<.*?>/g,"");
	var diff = strippedTagsInSpan - strippedTagsInEmail.length;
	for (var i = 0; i <= diff; i++){
	    email += "&nbsp;&nbsp;";
	}
    }
    span.innerHTML = email;
    return true;
}

function ObfuscateEmailAddressInInnerHTML(span)
{
    span.innerHTML = ObfuscateEmailLinkText(span.innerHTML);
    return true;
}


/* Helper to concat body.onload content */

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
  return true;
}


/* --- BoxOver ---
/* --- v 2.1 17th June 2006
By Oliver Bryant with help of Matthew Tagg
http://boxover.swazz.org */

if (typeof document.attachEvent!='undefined') {
   window.attachEvent('onload',init);
   document.attachEvent('onmousemove',moveMouse);
   document.attachEvent('onclick',checkMove); }
else {
   window.addEventListener('load',init,false);
   document.addEventListener('mousemove',moveMouse,false);
   document.addEventListener('click',checkMove,false);
}

var oDv=document.createElement("div");
var dvHdr=document.createElement("div");
var dvBdy=document.createElement("div");
var windowlock,boxMove,fixposx,fixposy,lockX,lockY,fixx,fixy,ox,oy,boxLeft,boxRight,boxTop,boxBottom,evt,mouseX,mouseY,boxOpen,totalScrollTop,totalScrollLeft;
boxOpen=false;
ox=10;
oy=10;
lockX=0;
lockY=0;

function init() {
	oDv.appendChild(dvHdr);
	oDv.appendChild(dvBdy);
	oDv.style.position="absolute";
	oDv.style.visibility='hidden';
	document.body.appendChild(oDv);	
}

function defHdrStyle() {
	dvHdr.innerHTML='<img  style="vertical-align:middle"  src="info.gif">&nbsp;&nbsp;'+dvHdr.innerHTML;
	dvHdr.style.fontWeight='bold';
	dvHdr.style.width='200px';
	dvHdr.style.fontFamily='arial';
	dvHdr.style.border='1px solid #000';
	dvHdr.style.padding='4';
	dvHdr.style.fontSize='11';
	dvHdr.style.color='#fff';
	dvHdr.style.background='#000';
	dvHdr.style.filter='alpha(opacity=100)'; // IE
	dvHdr.style.opacity='1'; // FF
}

function defBdyStyle() {
	dvBdy.style.borderBottom='1px solid #000';
	dvBdy.style.borderLeft='1px solid #000';
	dvBdy.style.borderRight='1px solid #000';
	dvBdy.style.width='200px';
	dvBdy.style.fontFamily='arial';
	dvBdy.style.fontSize='11';
	dvBdy.style.padding='4';
	dvBdy.style.color='#000';
	dvBdy.style.background='#FFFFFF';
	dvBdy.style.filter='alpha(opacity=100)'; // IE
	dvBdy.style.opacity='1'; // FF
}

function checkElemBO(txt) {
if (!txt || typeof(txt) != 'string') return false;
if ((txt.indexOf('header')>-1)&&(txt.indexOf('body')>-1)&&(txt.indexOf('[')>-1)&&(txt.indexOf('[')>-1)) 
   return true;
else
   return false;
}

function scanBO(curNode) {
	  if (checkElemBO(curNode.title)) {
         curNode.boHDR=getParam('header',curNode.title);
         curNode.boBDY=getParam('body',curNode.title);
			curNode.boCSSBDY=getParam('cssbody',curNode.title);			
			curNode.boCSSHDR=getParam('cssheader',curNode.title);
			curNode.IEbugfix=(getParam('hideselects',curNode.title)=='on')?true:false;
			curNode.fixX=parseInt(getParam('fixedrelx',curNode.title));
			curNode.fixY=parseInt(getParam('fixedrely',curNode.title));
			curNode.absX=parseInt(getParam('fixedabsx',curNode.title));
			curNode.absY=parseInt(getParam('fixedabsy',curNode.title));
			curNode.offY=(getParam('offsety',curNode.title)!='')?parseInt(getParam('offsety',curNode.title)):10;
			curNode.offX=(getParam('offsetx',curNode.title)!='')?parseInt(getParam('offsetx',curNode.title)):10;
			curNode.fade=(getParam('fade',curNode.title)=='on')?true:false;
			curNode.fadespeed=(getParam('fadespeed',curNode.title)!='')?getParam('fadespeed',curNode.title):0.04;
			curNode.delay=(getParam('delay',curNode.title)!='')?parseInt(getParam('delay',curNode.title)):0;
			if (getParam('requireclick',curNode.title)=='on') {
				curNode.requireclick=true;
				document.all?curNode.attachEvent('onclick',showHideBox):curNode.addEventListener('click',showHideBox,false);
				document.all?curNode.attachEvent('onmouseover',hideBox):curNode.addEventListener('mouseover',hideBox,false);
			}
			else {// Note : if requireclick is on the stop clicks are ignored   			
   			if (getParam('doubleclickstop',curNode.title)!='off') {
   				document.all?curNode.attachEvent('ondblclick',pauseBox):curNode.addEventListener('dblclick',pauseBox,false);
   			}	
   			if (getParam('singleclickstop',curNode.title)=='on') {
   				document.all?curNode.attachEvent('onclick',pauseBox):curNode.addEventListener('click',pauseBox,false);
   			}
   		}
			curNode.windowLock=getParam('windowlock',curNode.title).toLowerCase()=='off'?false:true;
			curNode.title='';
			curNode.hasbox=1;
	   }
	   else
	      curNode.hasbox=2;   
}


function getParam(param,list) {
	var reg = new RegExp('([^a-zA-Z]' + param + '|^' + param + ')\\s*=\\s*\\[\\s*(((\\[\\[)|(\\]\\])|([^\\]\\[]))*)\\s*\\]');
	var res = reg.exec(list);
	var returnvar;
	if(res)
		return res[2].replace('[[','[').replace(']]',']');
	else
		return '';
}

function Left(elem){	
	var x=0;
	if (elem.calcLeft)
		return elem.calcLeft;
	var oElem=elem;
	while(elem){
		 if ((elem.currentStyle)&& (!isNaN(parseInt(elem.currentStyle.borderLeftWidth)))&&(x!=0))
		 	x+=parseInt(elem.currentStyle.borderLeftWidth);
		 x+=elem.offsetLeft;
		 elem=elem.offsetParent;
	  } 
	oElem.calcLeft=x;
	return x;
	}

function Top(elem){
	 var x=0;
	 if (elem.calcTop)
	 	return elem.calcTop;
	 var oElem=elem;
	 while(elem){		
	 	 if ((elem.currentStyle)&& (!isNaN(parseInt(elem.currentStyle.borderTopWidth)))&&(x!=0))
		 	x+=parseInt(elem.currentStyle.borderTopWidth); 
		 x+=elem.offsetTop;
	         elem=elem.offsetParent;
 	 } 
 	 oElem.calcTop=x;
 	 return x;
 	 
}

var ah,ab;
function applyStyles() {
	if(ab)
		oDv.removeChild(dvBdy);
	if (ah)
		oDv.removeChild(dvHdr);
	dvHdr=document.createElement("div");
	dvBdy=document.createElement("div");
	CBE.boCSSBDY?dvBdy.className=CBE.boCSSBDY:defBdyStyle();
	CBE.boCSSHDR?dvHdr.className=CBE.boCSSHDR:defHdrStyle();
	dvHdr.innerHTML=CBE.boHDR;
	dvBdy.innerHTML=CBE.boBDY;
	ah=false;
	ab=false;
	if (CBE.boHDR!='') {		
		oDv.appendChild(dvHdr);
		ah=true;
	}	
	if (CBE.boBDY!=''){
		oDv.appendChild(dvBdy);
		ab=true;
	}	
}

var CSE,iterElem,LSE,CBE,LBE, totalScrollLeft, totalScrollTop, width, height ;
var ini=false;

// Customised function for inner window dimension
function SHW() {
   if (document.body && (document.body.clientWidth !=0)) {
      width=document.body.clientWidth;
      height=document.body.clientHeight;
   }
   if (document.documentElement && (document.documentElement.clientWidth!=0) && (document.body.clientWidth + 20 >= document.documentElement.clientWidth)) {
      width=document.documentElement.clientWidth;   
      height=document.documentElement.clientHeight;   
   }   
   return [width,height];
}


var ID=null;
function moveMouse(e) {
   //boxMove=true;
	e?evt=e:evt=event;
	
	CSE=evt.target?evt.target:evt.srcElement;
	
	if (!CSE.hasbox) {
	   // Note we need to scan up DOM here, some elements like TR don't get triggered as srcElement
	   iElem=CSE;
	   while ((iElem.parentNode) && (!iElem.hasbox)) {
	      scanBO(iElem);
	      iElem=iElem.parentNode;
	   }	   
	}
	
	if ((CSE!=LSE)&&(!isChild(CSE,dvHdr))&&(!isChild(CSE,dvBdy))){		
	   if (!CSE.boxItem) {
			iterElem=CSE;
			while ((iterElem.hasbox==2)&&(iterElem.parentNode))
					iterElem=iterElem.parentNode; 
			CSE.boxItem=iterElem;
			}
		iterElem=CSE.boxItem;
		if (CSE.boxItem&&(CSE.boxItem.hasbox==1))  {
			LBE=CBE;
			CBE=iterElem;
			if (CBE!=LBE) {
				applyStyles();
				if (!CBE.requireclick)
					if (CBE.fade) {
						if (ID!=null)
							clearTimeout(ID);
						ID=setTimeout("fadeIn("+CBE.fadespeed+")",CBE.delay);
					}
					else {
						if (ID!=null)
							clearTimeout(ID);
						COL=1;
						ID=setTimeout("oDv.style.visibility='visible';ID=null;",CBE.delay);						
					}
				if (CBE.IEbugfix) {hideSelects();} 
				fixposx=!isNaN(CBE.fixX)?Left(CBE)+CBE.fixX:CBE.absX;
				fixposy=!isNaN(CBE.fixY)?Top(CBE)+CBE.fixY:CBE.absY;			
				lockX=0;
				lockY=0;
				boxMove=true;
				ox=CBE.offX?CBE.offX:10;
				oy=CBE.offY?CBE.offY:10;
			}
		}
		else if (!isChild(CSE,dvHdr) && !isChild(CSE,dvBdy) && (boxMove))	{
			// The conditional here fixes flickering between tables cells.
			if ((!isChild(CBE,CSE)) || (CSE.tagName!='TABLE')) {   			
   			CBE=null;
   			if (ID!=null)
  					clearTimeout(ID);
   			fadeOut();
   			showSelects();
			}
		}
		LSE=CSE;
	}
	else if (((isChild(CSE,dvHdr) || isChild(CSE,dvBdy))&&(boxMove))) {
		totalScrollLeft=0;
		totalScrollTop=0;
		
		iterElem=CSE;
		while(iterElem) {
			if(!isNaN(parseInt(iterElem.scrollTop)))
				totalScrollTop+=parseInt(iterElem.scrollTop);
			if(!isNaN(parseInt(iterElem.scrollLeft)))
				totalScrollLeft+=parseInt(iterElem.scrollLeft);
			iterElem=iterElem.parentNode;			
		}
		if (CBE!=null) {
			boxLeft=Left(CBE)-totalScrollLeft;
			boxRight=parseInt(Left(CBE)+CBE.offsetWidth)-totalScrollLeft;
			boxTop=Top(CBE)-totalScrollTop;
			boxBottom=parseInt(Top(CBE)+CBE.offsetHeight)-totalScrollTop;
			doCheck();
		}
	}
	
	if (boxMove&&CBE) {
		// This added to alleviate bug in IE6 w.r.t DOCTYPE
		bodyScrollTop=document.documentElement&&document.documentElement.scrollTop?document.documentElement.scrollTop:document.body.scrollTop;
		bodyScrollLet=document.documentElement&&document.documentElement.scrollLeft?document.documentElement.scrollLeft:document.body.scrollLeft;
		mouseX=evt.pageX?evt.pageX-bodyScrollLet:evt.clientX-document.body.clientLeft;
		mouseY=evt.pageY?evt.pageY-bodyScrollTop:evt.clientY-document.body.clientTop;
		if ((CBE)&&(CBE.windowLock)) {
			mouseY < -oy?lockY=-mouseY-oy:lockY=0;
			mouseX < -ox?lockX=-mouseX-ox:lockX=0;
			mouseY > (SHW()[1]-oDv.offsetHeight-oy)?lockY=-mouseY+SHW()[1]-oDv.offsetHeight-oy:lockY=lockY;
			mouseX > (SHW()[0]-dvBdy.offsetWidth-ox)?lockX=-mouseX-ox+SHW()[0]-dvBdy.offsetWidth:lockX=lockX;			
		}
		oDv.style.left=((fixposx)||(fixposx==0))?fixposx:bodyScrollLet+mouseX+ox+lockX+"px";
		oDv.style.top=((fixposy)||(fixposy==0))?fixposy:bodyScrollTop+mouseY+oy+lockY+"px";		
		
	}
}

function doCheck() {	
	if (   (mouseX < boxLeft)    ||     (mouseX >boxRight)     || (mouseY < boxTop) || (mouseY > boxBottom)) {
		if (!CBE.requireclick)
			fadeOut();
		if (CBE.IEbugfix) {showSelects();}
		CBE=null;
	}
}

function pauseBox(e) {
   e?evt=e:evt=event;
	boxMove=false;
	evt.cancelBubble=true;
}

function showHideBox(e) {
	oDv.style.visibility=(oDv.style.visibility!='visible')?'visible':'hidden';
}

function hideBox(e) {
	oDv.style.visibility='hidden';
}

var COL=0;
var stopfade=false;
function fadeIn(fs) {
		ID=null;
		COL=0;
		oDv.style.visibility='visible';
		fadeIn2(fs);
}

function fadeIn2(fs) {
		COL=COL+fs;
		COL=(COL>1)?1:COL;
		oDv.style.filter='alpha(opacity='+parseInt(100*COL)+')';
		oDv.style.opacity=COL;
		if (COL<1)
		 setTimeout("fadeIn2("+fs+")",20);		
}


function fadeOut() {
	oDv.style.visibility='hidden';
	
}

function isChild(s,d) {
	while(s) {
		if (s==d) 
			return true;
		s=s.parentNode;
	}
	return false;
}

var cSrc;
function checkMove(e) {
	e?evt=e:evt=event;
	cSrc=evt.target?evt.target:evt.srcElement;
	if ((!boxMove)&&(!isChild(cSrc,oDv))) {
		fadeOut();
		if (CBE&&CBE.IEbugfix) {showSelects();}
		boxMove=true;
		CBE=null;
	}
}

function showSelects(){
   var elements = document.getElementsByTagName("select");
   for (i=0;i< elements.length;i++){
      elements[i].style.visibility='visible';
   }
}

function hideSelects(){
   var elements = document.getElementsByTagName("select");
   for (i=0;i< elements.length;i++){
   elements[i].style.visibility='hidden';
   }
}

function toggleElementDisplay(elem_id,
			      link_id,
			      text_toggle_on,
			      text_toggle_off){
    var elem = document.getElementById(elem_id);
    var link = document.getElementById(link_id);

    if (elem.style.display == "none" ||
	!elem.style.display){
	elem.style.display = "block";
	link.innerHTML = text_toggle_off;
    }
    else {
	elem.style.display = "none";
	link.innerHTML = text_toggle_on;
    }
}