/**
* ½ºÅ©·Ñ °ü·Ã ÇÔ¼ö
*
* 20081219 óÀ½ ÀÛ¼º
*
*/

var restarea=6; //width of the "neutral" area in the center of the gallery in px
var maxspeed=7; //top scroll speed in pixels. Script auto creates a range from 0 to top speed.

var iedom=document.getElementById;
var scrollspeed=0;
var movestate="";

if (iedom)
    document.write('<span id="temp" style="visibility:hidden;position:absolute;top:-100;left:-10000;"></span>');

var actualwidth='';
var cross_scroll, ns_scroll;
var loadedyes=0;

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

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";
    }
    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";
    }
    righttime=setTimeout("moveright()",10);
}

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

function contains_ns6(a, b) {
    if(b == null) return false;
    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.lefttime) clearTimeout(lefttime);
        if (window.righttime) clearTimeout(righttime);
        movestate="";
    }
}

function fillup(){
    if (iedom) {
        crossmain=document.getElementById("motioncontainer");
        if(crossmain==null) return false;
        
        menuwidth=parseInt(crossmain.style.width);
        mainobjoffset=getposOffset(crossmain, "left");
        cross_scroll=document.getElementById("motiongallery");
        document.getElementById("temp").innerHTML=cross_scroll.innerHTML; //NEW stuff
        actualwidth=document.all? cross_scroll.offsetWidth : document.getElementById("temp").offsetWidth;
        if (!window.opera) document.getElementById("temp").style.display="none";
        crossmain.onmousemove=function(e) {
                                    motionengine(e);
                              }

        crossmain.onmouseout=function(e) {
                                    stopmotion(e);
                             }
    }
    loadedyes=1
}