/***
*
*	ToDo:
*	- NOSCRIPT abfangen
*	- Statistik
*
***/

// globals & Const
var bilder = new Array();
var gruppe = -1;
var poss = new Array( 0, 0, 0, 0, 0, 0, 0 );
var coBreite = 975;
var coHoehe  = 550;
var coTage = 5;

// Lader und Inits
function myFiller() {}

// Ausstellungen filtern
function myControler() {
	var _b = document.getElementById( "showB" );
	var _n = document.getElementById( "showN" );
	var _l = document.getElementById( "showL" );
	var _p = null;

	// Anzeige leermachen
	for (var i=0;i<_b.childNodes.length;i++) { _b.removeChild( _b.childNodes[0] ); }
	for (var i=0;i<_n.childNodes.length;i++) { _n.removeChild( _n.childNodes[0] ); }
	for (var i=0;i<_l.childNodes.length;i++) { _l.removeChild( _l.childNodes[0] ); }
	
	// Anzeige füllen
	for (var i=0;i<ausstellungen.length;i++) {
		var _now = new Date()
		var _von = new Date();
		var _bis = new Date();
		
		// Tagesdifferenzen errechnen
		var _c = ausstellungen[i].von.split( "." ); _von.setTime( 0 );
		_von.setYear( _c[2] );	_von.setMonth( _c[1]-1 ); _von.setDate( _c[0] );
		_difV = ( (_von.getTime()-_now.getTime()) / 1000/60/60/24 ).toFixed(0);
		var _c = ausstellungen[i].bis.split( "." ); _bis.setTime( 0 );
		_bis.setYear( _c[2] );	_bis.setMonth( _c[1]-1 ); _bis.setDate( _c[0] );
		_difB = ( (_bis.getTime()-_now.getTime()) / 1000/60/60/24 ).toFixed(0);
		
		// bald - von>heute
		if ( (_difV-coTage)>0 ) { _p = _l;

		// aktuell - von<=heute && bis>=heute
		} else if ( (_difB+coTage)>=0 ) { _p = _n
		
		// früher - von<heute && bis<heute
		} else  {	_p = _b	}
		
		var _o = document.createElement( "a" );
		_o.appendChild( document.createTextNode( ausstellungen[i].name ) );
		_o.href = "javascript:myContent( "+(10+1+i)+" )";
		_p.appendChild( _o );
	}
}

// Bilder vorladen
function myShower() {
	for (var i=0;i<katalog.length;i++) {
		bilder[i] = new Array();
		for (var j=0;j<katalog[i].length;j++) {
			bilder[i][j] = loadPic( katalog[i][j].bild );
		}
	}
}

// Exiter
function myExiter() {

	delete xmlhttp
	delete myXMLdata;
	delete myXMLcontent;
	delete myRoot;
	
	for(var i=0;i<katalog.length;i++){
		for(var j=0;j<katalog[i].length;j++) {delete katalog[i][j]}
		delete katalog[i];
	}
	for(var i=0;i<bilder.length;i++){delete bilder[i]}
	for(var i=0;i<kuenstler.length;i++){delete kuenstler[i]}
	for(var i=0;i<ausstellungen.length;i++){delete ausstellungen[i]}

	delete katalog;
	delete bilder;
	delete kuenstler;
	delete ausstellungen;
	delete klassen;
}

// Handler
function myMOver() { this.style.cursor = "pointer" }
function myMOut() { this.style.cursor = "auto" }
function myNext() { poss[gruppe]++; myContent() }
function myPrev() { poss[gruppe]--; myContent() }
function myEmailer() { window.location = "mailto:galerie@galeriegross.de&subject=Kontakt ueber galeriegross.de"; };

// Anzeige-BASICs
function chMenu( _gruppe ) {
	if ((_gruppe-1) == gruppe) { return }
	if (gruppe<=8) {
		var q = document.getElementById( "menu1" ).getElementsByTagName( "a" );
		if(gruppe>=0) {q[gruppe].style.color = "#BBBBBB"};
	}
	
	var q = document.getElementById( "menu2" ).getElementsByTagName( "a" );
	q[0].style.color = "#BBBBBB";
	q[1].style.color = "#BBBBBB";
	q[2].style.color = "#BBBBBB";

	if (_gruppe-1<=8) {
		var p = document.getElementById( "menu1" ).getElementsByTagName( "a" );
		p[_gruppe-1].style.color = "FF6600";
	} else {
		var p = document.getElementById( "menu2" ).getElementsByTagName( "a" );
		p[_gruppe-11].style.color = "FF6600";
	}
}
function noContent() {
	// Anzeige umstellen
	var p = document.getElementById( "content" );
	var _o = document.getElementById( "conPic" );
	if (_o!=null) {p.removeChild( _o) };
	document.getElementById( "hints" ).style.visibility = "hidden";
	document.getElementById( "myPrev" ).style.visibility = "hidden";
	document.getElementById( "myInfo" ).style.visibility = "hidden";
	document.getElementById( "myNext" ).style.visibility = "hidden";
	document.getElementById( "shows" ).style.visibility = "hidden";
	document.getElementById( "showL" ).style.visibility = "hidden";
	document.getElementById( "showB" ).style.visibility = "hidden";
	document.getElementById( "showN" ).style.visibility = "hidden";
	document.getElementById( "kontakt" ).style.visibility = "hidden";
	document.getElementById( "impressum" ).style.visibility = "hidden";
}

// Anzeige
function myContent(  _gruppe, _item ) {
	_gruppe = (_gruppe==null)?(gruppe+1):(_gruppe);
	_item = (_item==null)?(poss[_gruppe-1]):(_item);
	_item = (!_item)?(0):(_item);

	// Bei Ausstellung umstellen
	if (_gruppe>10) {
		_gruppe -= 1;
	} else {
		chMenu( _gruppe );
	}

	// Zeiger umsetzen
	poss[_gruppe-1] = _item;
	gruppe = _gruppe-1;

	// Texte ausblenden
	document.getElementById( "shows" ).style.visibility = "hidden";
	document.getElementById( "showL" ).style.visibility = "hidden";
	document.getElementById( "showB" ).style.visibility = "hidden";
	document.getElementById( "showN" ).style.visibility = "hidden";
	document.getElementById( "impressum" ).style.visibility = "hidden";
	document.getElementById( "kontakt" ).style.visibility = "hidden";

	// Bild anzeigen
	var p = document.getElementById( "content" );
	var pic = document.getElementById( "conPic" );
	if (pic!=null) {p.removeChild( pic )};
	pic = bilder[_gruppe-1][_item];
	pic.id = "conPic";
	pic.alt = "Bild";
	pic.style.visibility = "visible";

	document.getElementById( "content" ).appendChild( pic );

	// Info anzeigen
	document.getElementById( "hints" ).style.visibility = "visible";
	var p = document.getElementById( "myInfo" );
	for (var i=p.childNodes.length-1;i>=0;i--) {p.removeChild( p.childNodes[i] ) };
	p.appendChild(  document.createTextNode((_item+1)+" / "+(katalog[_gruppe-1].length)) );
	
	// Texte anzeigen
	var p = document.getElementById( "hint0" );
	for (var i=p.childNodes.length-1;i>=0;i--) {p.removeChild( p.childNodes[i] ) };

	// Künstlername
	var _k = kuenstler[ katalog[_gruppe-1][_item].kuenstler ];
	_c = document.createTextNode( (_k==null)?(""):(_k.name) );
	p.appendChild(  _c );
	
	// Künstlertext
	var p = document.getElementById( "hint1" );
	for (var i=p.childNodes.length-1;i>=0;i--) {p.removeChild( p.childNodes[i] ) };
	if (_k!=null && !katalog[_gruppe-1][_item].short) {
		_c = _k.text.split( "\n" );
		for (var i=0;i<_c.length;i++) {
			var _d = document.createElement( "p" );
			_d.appendChild( document.createTextNode( _c[i] )  );
			p.appendChild( _d );
		}	
	}
	
	// Produkttext
	var p = document.getElementById( "hint2" );
	for (var i=p.childNodes.length-1;i>=0;i--) {p.removeChild( p.childNodes[i] ) };

	if (katalog[_gruppe-1][_item].short) var p = document.getElementById( "hint1" );

	_c = katalog[_gruppe-1][_item].text.split( "\n" );
	for (var i=0;i<_c.length;i++) {
		var _d = document.createElement( "p" );
		_d.appendChild( document.createTextNode( _c[i] )  );
		p.appendChild( _d );
	}
	
	// Pfeile
	document.getElementById( "myPrev" ).style.visibility=
		(_item>0)?("visible"):("hidden");
	document.getElementById( "myNext" ).style.visibility=
		(_item<katalog[_gruppe-1].length-1)?("visible"):("hidden");
}

function myImpressum() {
	// Anzeige umstellen
	chMenu( 9 ); gruppe = 8;
	noContent();
	document.getElementById( "impressum" ).style.visibility = "visible";
}

function myKontakt() {
	// Anzeige umstellen
	chMenu( 8 ); gruppe = 7;
	noContent();
	document.getElementById( "kontakt" ).style.visibility = "visible";
}

function myShow( _show ) {
	chMenu( 10+_show );
	gruppe=(10+_show-1);
	noContent();
	document.getElementById( "shows" ).style.visibility = "visible";
	document.getElementById( "showN" ).style.visibility =
		(_show==1)?("visible"):("hidden");
	document.getElementById( "showB" ).style.visibility =
		(_show==2)?("visible"):("hidden");
	document.getElementById( "showL" ).style.visibility =
		(_show==3)?("visible"):("hidden");
}

function mySizer() {
	var p = document.getElementById( "inner" );
	p.style.width = coBreite;
	p.style.height = coHoehe;
	if (window.innerHeight) {
		p.style.top = ((window.innerHeight-coHoehe)/2)-10;
		p.style.left = ((window.innerWidth-coBreite)/2)-10;
	} else {
		p.style.top = ((document.body.offsetHeight-coHoehe)/2)-10;
		p.style.left = ((document.body.offsetWidth-coBreite)/2)-10;
	}

	// Scrollbalken ?
	var _c = (navigator.userAgent.indexOf( "MSIE" )>-1)?("auto"):("visible");
	document.getElementsByTagName( "body" )[0].style.overflow =
		(parseInt(p.style.top)<0 || parseInt(p.style.left)<0)?(_c):("hidden");
	
	if (parseInt(p.style.left)<0) p.style.left=0;
	if (parseInt(p.style.top)<0) p.style.top=0;

	var p = document.getElementById( "content" );
	p.style.height = coHoehe-100;
	var p = document.getElementById( "bgRechts" );
	p.style.height = coHoehe-100;
}
function myInit() {
	// Steuerdaten laden
	loadXMLDoc('gg0.xml', onXMLDatas );	
	
	// Buttons scharf schalten
	document.getElementById( "myNext" ).onmouseover = myMOver;
	document.getElementById( "myNext" ).onmouseout = myMOut;
	document.getElementById( "myNext" ).onclick = myNext;
	document.getElementById( "myPrev" ).onmouseover = myMOver;
	document.getElementById( "myPrev" ).onmouseout = myMOut;
	document.getElementById( "myPrev" ).onclick = myPrev;

	// email-links einsetzen
	for( var i=1;i<3;i++) {
		var p = document.getElementById( "myMail"+i );
		p.removeChild( p.childNodes[0] );
		p.appendChild( document.createTextNode( "galerie@galeriegross.de" ) );
		p.appendChild( document.createElement( "br" ) );
		p.appendChild( document.createTextNode( "<   email schreiben   >" ) );
		p.onmouseover = myMOver;
		p.onmouseout = myMOver;
		p.onclick = myEmailer;
	}
	
	// Höhen anpanssen
	mySizer();
	window.onresize = mySizer;
	document.getElementsByTagName( "body" )[0].onunload = myExiter;
}