/***********************************************
* CMotion Image Gallery II- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* Visit http://www.dynamicDrive.com for source code
* Modified by jscheuer1 for vertical orientation, at http://www.dynamicDrive.com/forums
***********************************************/

var restarea=6 //1) width of the "neutral" area in the center of the gallery in px
var maxspeed=7 //2) top scroll speed in pixels. Script auto creates a range from 0 to top speed.
//var endofgallerymsg="<span style='font-size: 11px'>End of Gallery</span>" //3) message to show at end of gallery. Enter "" to disable message.
var endofgallerymsg=""

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

var iedom=document.all||document.getElementById
var scrollspeed=0
var movestate=""

var actualheight=''
var cross_scroll
var loadedyes=0

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(){
  menuwidth=parseInt(crossmain.offsetWidth)
  mainobjoffsetW=getposOffset(crossmain, "left")
  statusdiv.style.left=mainobjoffsetW+(menuwidth/2)-(statusdiv.offsetWidth/2)+"px"
  statusdiv.style.top=menu_height+mainobjoffset+10+"px"
}

function showhidediv(what){
  if (endofgallerymsg!="")
    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 moveup(){
  if (loadedyes){
    movestate="up"
  if (iedom&&parseInt(cross_scroll.style.top)>(menu_height-actualheight)){
    cross_scroll.style.top=parseInt(cross_scroll.style.top)-scrollspeed+"px"
    showhidediv("hidden")
  }
  else
    showhidediv("visible")
  }
  uptime=setTimeout("moveup()",10)
}

function movedown(){
  if (loadedyes){
    movestate="down"
  if (iedom&&parseInt(cross_scroll.style.top)<0){
    cross_scroll.style.top=parseInt(cross_scroll.style.top)+scrollspeed+"px"
    showhidediv("hidden")
  }
  else
    showhidediv("visible")
  }
  downtime=setTimeout("movedown()",10)
}

function motionengine(e){
  var dsocx=(window.pageXOffset)? pageXOffset: ietruebody().scrollLeft;
  var dsocy=(window.pageYOffset)? pageYOffset : ietruebody().scrollTop;
  var curposy=window.event? event.clientY : e.clientY? e.clientY: ""
  curposy-=mainobjoffset-dsocy
  var leftbound=(menu_height-restarea)/2
  var rightbound=(menu_height+restarea)/2
  if (curposy>rightbound){
    scrollspeed=(curposy-rightbound)/((menu_height-restarea)/2) * maxspeed
    if (window.downtime) clearTimeout(downtime)
    if (movestate!="up") moveup()
  }
  else if (curposy<leftbound){
    scrollspeed=(leftbound-curposy)/((menu_height-restarea)/2) * maxspeed
    if (window.uptime) clearTimeout(uptime)
    if (movestate!="down") movedown()
  }
  else
    scrollspeed=0
}

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

function stopmotion(e){
  if ((window.event&&!crossmain.contains(event.toElement)) || (e && e.currentTarget && e.currentTarget!= e.relatedTarget && !contains_ns6(e.currentTarget, e.relatedTarget))){
    if (window.downtime) clearTimeout(downtime)
    if (window.uptime) clearTimeout(uptime)
      movestate=""
  }
}

function fillup(){
  if (iedom){
    crossmain=document.getElementById? document.getElementById("motioncontainer") : document.all.motioncontainer
    menu_height=parseInt(crossmain.style.height)
    mainobjoffset=getposOffset(crossmain, "top")
    cross_scroll=document.getElementById? document.getElementById("motiongallery") : document.all.motiongallery
    actualheight=cross_scroll.offsetHeight
    
    crossmain.onmousemove=function(e){
      motionengine(e)
    }
    crossmain.onmouseout=function(e){
      stopmotion(e)
      showhidediv("hidden")
    }
  }
  if (window.opera){
    cross_scroll.style.top=menu_height-actualheight+'px'
    setTimeout('cross_scroll.style.top=0', 10)
  }
  loadedyes=1
  if (endofgallerymsg!=""){
    creatediv()
    positiondiv()
  }
}
window.onload=fillup