/***********************************************
* CMotion Image Gallery- � Dynamic Drive DHTML code library (www.dynamicdrive.com)
* Visit http://www.dynamicDrive.com for source code
* This copyright notice must stay intact for legal use
* Modified for autowidth and optional starting positions in
* http://www.dynamicdrive.com/forums/showthread.php?t=11839 by jschuer1 8/5/06
***********************************************/

 //1) Set width of the "neutral" area in the center of the gallery.
var restarea=50;
 //2) Set top scroll speed in pixels. Script auto creates a range from 0 to top speed.
var maxspeed=10;
var acceleration=4;
var deceleration=1;
 //3) Set to maximum width for gallery - must be less than the actual length of the image train.
var maxwidth=890;
 //4) Set to 1 for left start, 0 for right, 2 for center.
var startpos=0;
 //5) Set message to show at end of gallery. Enter "" to disable message.
var endofgallerymsg='';

function enlargeimage(path, optWidth, optHeight){ //function to enlarge image. Change as desired.
var actualWidth=typeof optWidth!="undefined" ? optWidth : "890px" //set 600px to default width
var actualHeight=typeof optHeight!="undefined" ? optHeight : "140px" //set 500px to  default height
var winattributes="width="+actualWidth+",height="+actualHeight+",resizable=yes"
window.open(path,"", winattributes)
}

////NO NEED TO EDIT BELOW THIS LINE////////////

var iedom=document.all||document.getElementById, scrollspeed=0, movestate='', actualwidth='', cross_scroll, ns_scroll, statusdiv, loadedyes=0, lefttime, righttime;

function ietruebody(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body;
}

function creatediv(){
statusdiv=document.createElement("div")
statusdiv.setAttribute("id","statusdiv")
document.body.appendChild(statusdiv)
statusdiv=document.getElementById("statusdiv")
statusdiv.innerHTML=endofgallerymsg
}

function positiondiv(){
var mainobjoffset=getposOffset(crossmain, "left"),
menuheight=parseInt(crossmain.offsetHeight),
mainobjoffsetH=getposOffset(crossmain, "top");
statusdiv.style.left=mainobjoffset+(menuwidth/2)-(statusdiv.offsetWidth/2)+"px";
statusdiv.style.top=menuheight+mainobjoffsetH+"px";
}

function showhidediv(what){
if (endofgallerymsg!="") {
positiondiv();
statusdiv.style.visibility=what;
}
}

function getposOffset(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft: what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}


function moveleft(){
if (loadedyes){
movestate="left";
if (iedom&&parseInt(cross_scroll.style.left)>(menuwidth-actualwidth)){
cross_scroll.style.left=parseInt(cross_scroll.style.left)-scrollspeed+"px";
showhidediv("hidden");
}
else
showhidediv("visible");
}
lefttime=setTimeout("moveleft()",10);
}

function moveright(){
if (loadedyes){
movestate="right";
if (iedom&&parseInt(cross_scroll.style.left)<0){
cross_scroll.style.left=parseInt(cross_scroll.style.left)+scrollspeed+"px";
//alert(parseInt(cross_scroll.style.left)+scrollspeed+"px");
showhidediv("hidden");
}
else
showhidediv("visible");
}
righttime=setTimeout("moveright()",10);
}

function motionengine(e){
clearTimeout(mytimer);
var mainobjoffset=getposOffset(crossmain, "left"),
dsocx=(window.pageXOffset)? pageXOffset: ietruebody().scrollLeft,
dsocy=(window.pageYOffset)? pageYOffset : ietruebody().scrollTop,
curposy=window.event? event.clientX : e.clientX? e.clientX: "";
curposy-=mainobjoffset-dsocx;
var leftbound=(menuwidth-restarea)/2;
var rightbound=(menuwidth+restarea)/2;
if (curposy>rightbound){
scrollspeed=(curposy-rightbound)/((menuwidth-restarea)/2) * maxspeed;
clearTimeout(righttime);
if (movestate!="left") moveleft();
}
else if (curposy<leftbound){
scrollspeed=(leftbound-curposy)/((menuwidth-restarea)/2) * maxspeed;
clearTimeout(lefttime);
if (movestate!="right") moveright();
}
else
scrollspeed=0;
}

function contains_ns6(a, b) {
if (b!==null)
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function stopmotion(e){
if (!window.opera||(window.opera&&e.relatedTarget!==null))
if ((window.event&&!crossmain.contains(event.toElement)) || (e && e.currentTarget && e.currentTarget!= e.relatedTarget && !contains_ns6(e.currentTarget, e.relatedTarget))){
clearTimeout(lefttime);
clearTimeout(righttime);
movestate="";
}
}

var mytimer;
var moving = false;
var dir = 'left';

function goToPosition(posX){
  //alert(posX);
  var pos = parseInt(cross_scroll.style.left);
  var currentPos = Math.abs(pos) + maxwidth/2;
  var stop=false;
  var newPos;
  if(Math.abs(currentPos - posX) > (scrollspeed+5)){
  
    if((currentPos - posX) > 0){
      dir = 'left';
      if(currentPos <= maxwidth/2 + scrollspeed + 5) stop=true;
    }
    else{
      dir = 'right';
      if(currentPos > scrollerWidth - maxwidth/2 - scrollspeed - 5 )  stop=true; 
    }
    
    if(!stop){
      if(Math.abs(currentPos - posX) < scrollspeed * 15 || 
         (currentPos  -  maxwidth/2 - scrollspeed * 18) < 0 ||
         (currentPos + maxwidth/2 + scrollspeed * 18) > scrollerWidth) {
        scrollspeed -= deceleration;
      }
      else
        scrollspeed += Math.ceil(Math.abs(currentPos - posX)/200);
      
      if(dir == 'left') newPos = (pos + scrollspeed) + 'px';
      else newPos = (pos - scrollspeed) + 'px';
      cross_scroll.style.left = newPos;
      
      mytimer = setTimeout(function(){goToPosition(posX);}, 20);
    }
    else{
      clearTimeout(mytimer);
      scrollspeed=0;
    }
  }
  else{
    if(mytimer) clearTimeout(mytimer);
    scrollspeed=0;
    //alert('konec: ' + currentPos + ' ' + posX);
  }
}


function fillup(){
if (iedom){
crossmain=document.getElementById? document.getElementById("motioncontainer") : document.all.motioncontainer;
if(typeof crossmain.style.maxWidth!=='undefined')
crossmain.style.maxWidth=maxwidth+'px';
menuwidth=crossmain.offsetWidth;
cross_scroll=document.getElementById? document.getElementById("motiongallery") : document.all.motiongallery;
actualwidth=document.getElementById? document.getElementById("trueContainer").offsetWidth : document.all['trueContainer'].offsetWidth;
if (startpos)
cross_scroll.style.left=(menuwidth-actualwidth)/startpos+'px';
crossmain.onmousemove=function(e){
motionengine(e);
}

getObj('left-box').onmousemove=function(e){
  motionengine(e);
}
getObj('right-box').onmousemove=function(e){
  motionengine(e);
}
getObj('left-box').onmouseout=function(e){
  stopmotion(e);
}
getObj('right-box').onmouseout=function(e){
  stopmotion(e);
}

crossmain.onmouseout=function(e){
stopmotion(e);
showhidediv("hidden");
}
}
loadedyes=1
if (endofgallerymsg!=""){
creatediv();
positiondiv();
}
if (document.body.filters)
onresize()
//var timer = setInterval("info()", 2000);
}


function info(){
  alert(cross_scroll.style.left);
}


onresize=function(){
if (typeof motioncontainer!=='undefined'&&motioncontainer.filters){
motioncontainer.style.width="0";
motioncontainer.style.width="";
motioncontainer.style.width=Math.min(motioncontainer.offsetWidth, maxwidth)+'px';
}
menuwidth=crossmain.offsetWidth;
cross_scroll.style.left=startpos? (menuwidth-actualwidth)/startpos+'px' : 0;
}