/* auto scroll left/right */
/*Jeff */
/* www.huntingground.freeserve.co.uk */

hs5Arr=[

["billeder/forside/001.jpg","billeder/forside/001.jpg",""],
["billeder/forside/002.jpg","billeder/forside/002.jpg",""],
["billeder/forside/003.jpg","billeder/forside/003.jpg",""],
["billeder/forside/004.jpg","billeder/forside/004.jpg",""],
["billeder/forside/005.jpg","billeder/forside/005.jpg",""],
["billeder/forside/006.jpg","billeder/forside/006.jpg",""],
["billeder/forside/007.jpg","billeder/forside/007.jpg",""],
["billeder/forside/008.jpg","billeder/forside/008.jpg",""]/*ingen komma efter den sidste*/
]

dir=0 // 0 = left 1 = right
speed=1
imageSize=0  // % set to zero to use fixedWidth and fixedHeight values
fixedWidth=110 // set a fixed width
fixedHeight=110 // set a fixed height
spacerWidth=20 // space between images
dualFade=0 // 0 = fades in, 1 = fades out then in

biggest=0
ieBorder=0
totalWidth=0
hs5Timer=null

lastN=0
count=0
fading=0
fadeStep = 2
fadeSpeed=10
minFadeValue=0

preload=new Array()
for(var i=0;i<hs5Arr.length;i++){
preload[i]=[]

for(var j=0;j<2;j++){
preload[i][j]=new Image()
preload[i][j].src=hs5Arr[i][j]
}

}

function initHS5(){
scrollBox=document.getElementById("scroll_box")
scroll1=document.getElementById("scroller1")
for(var k=0;k<hs5Arr.length;k++){

scroll1.innerHTML+='<img id="pic'+k+'" src="'+preload[k][0].src+'" alt="'+hs5Arr[k][2]+'" title="'+hs5Arr[k][2]+'" onclick="initFade('+k+')">'

if(imageSize!=0){ // use percentage size
newWidth=preload[k][0].width/100*imageSize
newHeight=preload[k][0].height/100*imageSize
}
else{ // use fixed size
newWidth=fixedWidth
newHeight=fixedHeight
}

document.getElementById("pic"+k).style.width=newWidth+"px"
document.getElementById("pic"+k).style.height=newHeight+"px"

if(document.getElementById("pic"+k).offsetHeight>biggest){
biggest=document.getElementById("pic"+k).offsetHeight
}

document.getElementById("pic"+k).style.marginLeft=spacerWidth+"px"
totalWidth+=document.getElementById("pic"+k).offsetWidth+spacerWidth
}

totalWidth+=1

for(var l=0;l<hs5Arr.length;l++){ // vertically center images
document.getElementById("pic"+l).style.marginBottom = (biggest-document.getElementById("pic"+l).offsetHeight)/2+"px"
}

if(scrollBox.currentStyle&&!window.opera&&document.compatMode!="CSS1Compat"){
ieBorder=parseInt(scrollBox.currentStyle.borderWidth)*2
}

scrollBox.style.height=biggest+ieBorder+"px"
scroll1.style.width=totalWidth+"px"
scroll2=document.getElementById("scroller2")
scroll2.innerHTML=scroll1.innerHTML
scroll2.style.left= scroll1.offsetWidth+"px"
scroll2.style.top= 0+"px" //-scroll1.offsetHeight+"px"
scroll2.style.width=totalWidth+"px"

if(dir==1){
speed= -speed
}

scrollHS5()
}

function scrollHS5(){
clearTimeout(hs5Timer)
scroll1Pos=parseInt(scroll1.style.left)
scroll2Pos=parseInt(scroll2.style.left)
scroll1Pos-=speed
scroll2Pos-=speed
scroll1.style.left=scroll1Pos+"px"
scroll2.style.left=scroll2Pos+"px"
hs5Timer=setTimeout("scrollHS5()",50)

if(dir==0){
if(scroll1Pos< -scroll1.offsetWidth){
scroll1.style.left=scroll1.offsetWidth+"px"
}

if(scroll2Pos< -scroll1.offsetWidth){
scroll2.style.left=scroll1.offsetWidth+"px"
}
}

if(dir==1){
if(scroll1Pos>parseInt(scrollBox.style.width)){
scroll1.style.left=scroll2Pos+ (-scroll1.offsetWidth)+"px"
}

if(scroll2Pos>parseInt(scrollBox.style.width)){
scroll2.style.left=scroll1Pos+ (-scroll2.offsetWidth)+"px"
}
}

}

st=null
function pause(){
clearTimeout(hs5Timer)
clearTimeout(st)
}

function reStartHS5(){
clearTimeout(st)
st=setTimeout("scrollHS5()",100)
}

function initFade(n){
count=n
if(lastN==n||fading==1){return}

if(dualFade==0){fadeValue=0}
else{fadeValue=100}

picNum=n
lastN=n
fadePic()
}

function fadePic(){
displayEl=document.images["bigpic"]
fading=1
fadeValue -= fadeStep
fadeTimer=setTimeout("fadePic()",fadeSpeed)

if(displayEl.filters){displayEl.filters.alpha.opacity=fadeValue}
else{displayEl.style.opacity=(fadeValue/100)-0.1}

if(fadeValue<minFadeValue){ // for fade out first
fadeValue=minFadeValue
fadeStep= -fadeStep
displayEl.src=hs5Arr[picNum][1]
}

if(fadeValue>=100){ // fade in
fadeValue=100
fadeStep= -fadeStep
fading=0
clearTimeout(fadeTimer)
}
}