var currentViewMode=0;
var processing=0;
var MapImg;
var mapX=0;
var mapY=0;
var clickcounter=1;
var MOUSEOVER=0;
var companylist='';
var companylist_title='';
var printcompanylist='';
var mapbranches='';
var maxZoom=16;
var maxMapWidth=250*Math.pow(maxZoom,2)-250*maxZoom+500;

var activespot=-1;

var windowWidth=-1;
var windowHeight=-1;

var MapServer = Object.extend({}, Ausgangspunkt);
var currentZoom=getCurrentZoom();

function getCurrentZoom() {
	var MapWidth=MapServer.x2-MapServer.x1;
	var zoomStufe=0;
	if (MapWidth>=500&&MapWidth<=maxMapWidth) {
		zoomStufe=(maxZoom+1)-Math.floor(0.5+Math.sqrt(MapWidth/250-7/4));
	} else if (MapWidth>maxMapWidth) {
		zoomStufe=1;
	} else {
		zoomStufe=5;
	}
	return zoomStufe;
}

function updateShow() {

	if (MapServer.viewMode != currentViewMode) {
    	if (MapServer.viewMode==0) {
	    	toggleViewMode('Karte', 'on');
   			toggleViewMode('Luftbild', 'out');
   		} else {
    		toggleViewMode('Karte', 'out');
   			toggleViewMode('Luftbild', 'on');
   		}
   		currentViewMode=MapServer.viewMode;
   	}
   	if (typeof(MapImg)=='object' && MapImg.complete==true && processing) {
   		document.getElementById('Map').src=MapImg.src;
   		processing=0;
		var obj=document.getElementsByClassName('spot',document.getElementById('ajaxdiv'));
		for(var i=0;i<obj.length;i++) {
			obj[i].style.display='inline';
		}
   		MapImg=undefined;
   		if (!k) {
	   		document.getElementById('companylist').innerHTML=companylist;
	   		document.getElementById('printcompanylist').innerHTML=printcompanylist;
	   		if (companylist_title) {
		   		document.getElementById('companylist_title').innerHTML=companylist_title;
		   		document.getElementById('mainAreaContentPadding').getElementsByTagName('h2')[0].innerHTML=companylist_title;
		   	}
	   		document.getElementById('mapbranches').innerHTML=mapbranches;
	   	}
   	}
   	if (processing) {
   		document.getElementById('loading').style.display='block';
   		document.getElementById('massstab').style.display='none';
   	} else {
   		document.getElementById('loading').style.display='none';
   		document.getElementById('massstab').style.display='block';
		var Massstab=(MapServer.x2-MapServer.x1)*140/615;
   		var roundfactor=100;
   		if (Massstab>4000) {
   			roundfactor=1000;
   		}
   		Massstab=Math.floor(Massstab/roundfactor)*roundfactor;
		document.getElementById('massstab_wert').innerHTML=Massstab+' m';
   	}
   	if (MOUSEOVER==0) {
		hideinfo();
   		if (document.getElementById('basisiframe').src!="//web02.city-map.de/blank.html") {
   			document.getElementById('basisiframe').src="//web02.city-map.de/blank.html";
   		}
   		if (document.getElementById('plusiframe').src!="//web02.city-map.de/blank.html") {
	   		document.getElementById('plusiframe').src="//web02.city-map.de/blank.html";
	   	}
   	}
}

setInterval("updateShow()", 100);


function toggleViewMode(mode, set) {
   	document.getElementById('li'+mode).className=set;
   	document.getElementById('a'+mode).className=set;
}

function setBranchenfilter(br,brname) {
	branchenfilter=br;
	companylist_title=brname;
	move(MapServer, 'F');
}

function move(coords, direction) {

	if (!processing) {
		if (clickcounter>50) {
			alert(clicklimitreached);
		} else {
			processing=1;
			var query='x1='+coords.x1+'&x2='+coords.x2+'&y1='+coords.y1+'&y2='+coords.y2+'&viewMode='+coords.viewMode;
			if (direction) {
				query+='&direction='+direction;
			} else if (coords.clickX) {
				query+='&x='+coords.clickX+'&y='+coords.clickY;
			} else if (coords.cityId) {
				query+='&cityId='+coords.cityId;
			} else if (coords.streetId) {
				query+='&streetId='+coords.streetId;
			}			
			query+='&t='+time+'&xid='+xid+'&r='+r+'&kgs='+kgs+'&lg='+lg+'&br='+branchenfilter+'&k='+k+'&poix='+poix+'&poiy='+poiy+'&routeid='+routeid+'&showx='+showx+'&showy='+showy+'&routeextent='+routeextent;
			new Ajax.Updater('ajaxdiv', ajaxurl+'mapserver/ajaxserver.pl?'+query, {method: 'get', asynchronouse: true, evalScripts: true});
		}
	}
}

function setZoomSlider(moveabs) {
	var zoomValuecount=document.getElementById('zoomLevel').getAttribute('valuecount');
	var zoomDistance=document.getElementById('sliderId').getAttribute('distance')*1;
	var zoomStep=(14+zoomDistance)/(zoomValuecount);
	var sliderPos=Math.round(zoomStep*currentZoom-14);
	carpeLeft('sliderId', sliderPos)
	document.getElementById('zoomLevel').value=currentZoom;
	if (!moveabs) {
		move(MapServer, currentZoom);
	}
}

function mouseUpSlider(evnt) {
	if (document.getElementById('zoomLevel').value!=currentZoom) {
		currentZoom=document.getElementById('zoomLevel').value;
		move(MapServer, currentZoom);
	}
	sliderMouseUp(evnt);
}

function modifyZoom(change) {
	if (!processing) {
		if (change==-1 && currentZoom>1) {
			currentZoom--;
		} else if (change==1 && currentZoom<maxZoom) {
			currentZoom++;
		}
		setZoomSlider(0);
	}	
}

function mouseDownSlider(evnt) {
	if (!processing) {
		slide(evnt);
	}
}

function getScrollPos(what) {
	var scrollPosX;
	var scrollPosY;

	if (typeof window.pageYOffset != 'undefined') {
	   scrollPosX = window.pageXOffset;
	   scrollPosY = window.pageYOffset;
	} else if (typeof document.compatMode != 'undefined' && document.compatMode != 'BackCompat') {
	   scrollPosX = document.documentElement.scrollLeft;
	   scrollPosY = document.documentElement.scrollTop;
	} else if (typeof document.body != 'undefined') {
	   scrollPosX = document.body.scrollLeft;
	   scrollPosY = document.body.scrollTop;
	}
	if (what=='x') {
		return scrollPosX;
	} else {
		return scrollPosY;
	}
}

function moveToStreet(id) {
	MapServer.streetId=id;
	move(MapServer, '');
}

function moveToCity(id) {
	MapServer.cityId=id;
	move(MapServer, '');
}

function mouseDownMap(evnt) {
	var scrollPosX=getScrollPos('x');
	var scrollPosY=getScrollPos('y');
	if (!evnt) evnt = window.event;
	MapServer.clickX=evnt.clientX+scrollPosX-mapX;
	MapServer.clickY=evnt.clientY+scrollPosY-mapY;
	move(MapServer, '');
}
	
function getMapPos() {
    var mymap=document.getElementById('Map');
    var gety=0;
    var getx=0;
    while (mymap!=document.body && mymap!=document.mainAreaContent && mymap.offsetParent) {
        gety+=mymap.offsetTop;
        getx+=mymap.offsetLeft;
        mymap=mymap.offsetParent;
    }
    mapX=getx+2;
    mapY=gety+2;
}

function info(no,kdnr,eintragtyp,cox,coy,firma) {
	hideinfo();
	con(no);
	var infotext='<nobr><b>'+unescape(firma)+'</b></nobr>';
	infotext+='<br><nobr>'+clickinfo+'</nobr>';
	document.getElementById('info').onclick=function(){b(no,kdnr,eintragtyp,cox,coy);};
	document.getElementById('info').innerHTML=infotext;
	var layerwidth=document.getElementById('info').offsetWidth;
	if (cox+layerwidth+mapX>windowWidth) {
		cox=windowWidth-layerwidth-mapX-10;
	}
	document.getElementById('info').style.left=cox+'px';
	document.getElementById('info').style.top=coy+'px';
	document.getElementById('info').style.visibility='visible';
	activespot=no;
	MOUSEOVER=1;
}

function hideinfo() {
	document.getElementById('info').style.visibility='hidden';
	document.getElementById('basisiframe').style.visibility='hidden';
 	document.getElementById('plusiframe').style.visibility='hidden';
 	var tempactivespot=activespot;
 	activespot=-1;
 	coff(tempactivespot);
}

function b(no,kdnr,eintragtyp,cox,coy) {
	hideinfo();
	con(no);
	var layername=(eintragtyp==3)?'basis':'plus';
	var layerwidth=(eintragtyp==3)?614:298;
	var layerheight=(eintragtyp==3)?210:100;
	if (cox+layerwidth+mapX>windowWidth) {
		cox=windowWidth-layerwidth-mapX-10;
	}
	var scrollPosY=getScrollPos('y');
	if (coy+layerheight+mapY-scrollPosY>windowHeight) {
		coy=windowHeight-layerheight-mapY+scrollPosY;
	}
	document.getElementById(layername+'iframe').src=ajaxurl+'city/basisiframe/'+kdnr+lg+'.html';
	document.getElementById(layername+'eintrag').style.left=cox+'px';
	document.getElementById(layername+'eintrag').style.top=coy+'px';
	document.getElementById(layername+'iframe').style.visibility='visible';
	activespot=no;
	MOUSEOVER=1;
}

function getWindowWidth() {
	windowWidth=window.innerWidth;
	windowHeight=window.innerHeight;
	if (!windowWidth) {
		windowWidth=document.documentElement.clientWidth;
		windowHeight=document.documentElement.clientHeight;
	}
}

function con(i) {
	document.getElementById('c'+i).className='spotactive';
	document.getElementById('d'+i).className='spotactive';
}

function coff(i) {
	if (activespot!=i) {
		document.getElementById('c'+i).className='spot';
		document.getElementById('d'+i).className='spot';
	}
}

function streets(ort,kgs,offset,limit,ortid,lg,cha) {
	new Ajax.Updater('streetinner', ajaxurl+'mapserver/ajaxstreets.pl?ort='+ort+'&kgs='+kgs+'&offset='+offset+'&limit='+limit+'&ortid='+ortid+'&lg='+lg+'&char='+cha, {method: 'get', asynchronouse: true, evalScripts: true});
}

function onBlurCompany() {
	if (MOUSEOVER!=2) {
		hideinfo();
	}
}

window.onload = function() {
	getWindowWidth();
	getMapPos();
	move(Ausgangspunkt, '');
	document.getElementById('sliderId').onmousedown=mouseDownSlider;
	document.getElementById('Map').onclick=mouseDownMap;
	setZoomSlider(0);
}
window.onresize = getWindowWidth;