/**
 * @author Thomas Wulf
 * spezial funktionen für die gallerieseiten
 */

function clearKnobs(){
if (document.images.knob01) {document.images.knob01.src='./images/knob0.gif';	}
if (document.images.knob02) {document.images.knob02.src='./images/knob0.gif';	}
if (document.images.knob03) {document.images.knob03.src='./images/knob0.gif';	}
if (document.images.knob04) {document.images.knob04.src='./images/knob0.gif';	}
if (document.images.knob05) {document.images.knob05.src='./images/knob0.gif';	}
if (document.images.knob06) {document.images.knob06.src='./images/knob0.gif';	}
if (document.images.knob07) {document.images.knob07.src='./images/knob0.gif';	}
if (document.images.knob08) {document.images.knob08.src='./images/knob0.gif';	}
if (document.images.knob09) {document.images.knob09.src='./images/knob0.gif';	}
if (document.images.knob10) {document.images.knob10.src='./images/knob0.gif';	}
if (document.images.knob11) {document.images.knob11.src='./images/knob0.gif';	}
if (document.images.knob12) {document.images.knob12.src='./images/knob0.gif';	}
if (document.images.knob13) {document.images.knob13.src='./images/knob0.gif';	}
if (document.images.knob14) {document.images.knob14.src='./images/knob0.gif';	}
if (document.images.knob15) {document.images.knob15.src='./images/knob0.gif';	}
if (document.images.knob16) {document.images.knob16.src='./images/knob0.gif';	}
if (document.images.knob17) {document.images.knob17.src='./images/knob0.gif';	}
if (document.images.knob18) {document.images.knob18.src='./images/knob0.gif';	}
if (document.images.knob19) {document.images.knob19.src='./images/knob0.gif';	}
if (document.images.knob20) {document.images.knob20.src='./images/knob0.gif';	}
}

function setKnob(id){
 clearKnobs();
 e=document.getElementById(id);
 e.src ='./images/knob1.gif';
 p = 70;
}

var boxW = 576;
var qs = 0.5;

function changewidth(){
  if(boxW<=550){return;}
  boxW = boxW - qs;
  if (boxW < 550) { boxW = 550};
  e=document.getElementById("mainbox");
  e.style.width = boxW + 'px';
  t=setTimeout("changewidth();",0);
}

var titlePre = "<span class='h0'>";
var titlePost = "</span>";

function captionAdorn(cap){
	cap = cap.replace('{', titlePre);
	cap = cap.replace('}', titlePost);
	return cap;
}

function SetCaption(imageName){
	obj1 = document.getElementById( "RT" );
	obj2 = document.getElementById( "IT" );
	for (i = 0; i < imgCaptions.length; i++) {
		if (imageName == imgArray[i]) {
		   if (lang == 'E') {ct = "Room " + room + ", Picture " + (i + 1);  }
		       else         {ct = "Raum " + room + ", Bild " + (i + 1);}
		obj1.innerHTML = ct;
		ct = imgCaptions[i];
		ct = captionAdorn(ct)
		obj2.innerHTML = ct;
		}
	}
}

function loadGImg(filename, knobId){
    if (imgLoaded == filename) {return} 
    setKnob(knobId);	
	SetCaption(filename);
	outInFader('mainimage', 18, 6, imgPath + filename + imgExt, 'X');
	imgLoaded = filename;
}

var imgArrayPL = new Array(9);
function imgPreLoad(){
	for (i = 0; i < imgArray.length; i++) {
		imgArrayPL[i] = new Image();
		s = imgPath + imgArray[i] + imgExt;
		imgArrayPL[i].src = s;
	}
	loadGImg(imgArray[0], 'knob01');
}