//1) Set width of the "neutral" area in the center of the gallery.
var restarea=100;
//2) Set top scroll speed in pixels. Script auto creates a range from 0 to top speed.
var maxspeed=7;
//3) Set to maximum width for gallery - must be less than the actual length of the image train.
var maxwidth=200;
//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 : "600px" //set 600px to default width
    var actualHeight=typeof optHeight!="undefined" ? optHeight : "500px" //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.top = mainobjoffsetH + (menuwidth/2) - (statusdiv.offsetHeight / 2) + "px";
    statusdiv.style.left = menuwidth + mainobjoffset + "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 = "top";
        
        if (iedom && parseInt(cross_scroll.style.top) > (menuwidth - actualwidth)) {
            scrollspeed = 2;
            cross_scroll.style.top = parseInt(cross_scroll.style.top) - scrollspeed + "px"; 
        }
    }
    
    lefttime = setTimeout("moveleft()", 20);
}

// ******************************
//
// ******************************
function moveright() {  
    if (loadedyes) {
        movestate = "bottom";        
        
        if (iedom&&parseInt(cross_scroll.style.top) < 0) {
            scrollspeed = 2;
            cross_scroll.style.top = parseInt(cross_scroll.style.top) + scrollspeed + "px";            
        }            
    }
    
    righttime = setTimeout("moveright()", 20);
}

// ******************************
//
// ******************************
function motionengine(e) {        
    var mainobjoffset = getposOffset(crossmain, "top"), 
        dsocx = (window.pageXOffset) ? pageXOffset : ietruebody().scrollLeft,
        dsocy = (window.pageYOffset) ? pageYOffset : ietruebody().scrollTop,
        curposy = window.event ? event.clientY : e.clientY ? e.clientY: ""; 
   
    curposy-= mainobjoffset - dsocy;   
    var topbound = (menuwidth - restarea) / 2;
    var bottombound = (menuwidth + restarea) / 2;  

    if (curposy > bottombound) {
        scrollspeed = (curposy - bottombound)/((menuwidth - restarea) / 2) * maxspeed;
        clearTimeout(righttime);        
        if (movestate!="top") moveleft();  
    } else if (curposy < topbound) {
        scrollspeed = (topbound - curposy)/((menuwidth - restarea) / 2) * maxspeed;
        clearTimeout(lefttime);
        if (movestate!="bottom") moveright();
    } else
        scrollspeed=0;
}

// ******************************
//
// ******************************
function fillup() {
    if (iedom)
    {
        crossmain = document.getElementById ? document.getElementById("motioncontainer") : document.all.motioncontainer;
        if (crossmain == null)
            return;
        
        if(typeof crossmain.style.maxWidth!=='undefined')
            crossmain.style.maxWidth = maxwidth +'px';

        menuwidth = crossmain.offsetHeight;
        cross_scroll = document.getElementById ? document.getElementById("motiongallery") : document.all.motiongallery;
        actualwidth = document.getElementById ? document.getElementById("trueContainer").offsetHeight : document.all['trueContainer'].offsetHeight; 
        
        arrowTop = document.getElementById ? document.getElementById("arrowtop") : document.all.arrowtop;
        arrowBottom = document.getElementById ? document.getElementById("arrowbottom") : document.all.arrowbottom;
   
        if (startpos)
            cross_scroll.style.top = (menuwidth - actualwidth) / startpos + 'px';
                    
        arrowTop.onmousemove=function(e){
            clearTimeout(righttime); 
            moveright();       
        }
        arrowTop.onmouseout=function(e){
            stopmotion(e);
            showhidediv("hidden");  
        }
        arrowBottom.onmousemove=function(e){
            clearTimeout(lefttime); 
            moveleft();       
        }
        arrowBottom.onmouseout=function(e){
            stopmotion(e);
            showhidediv("hidden");       
        }
    }
    
    loadedyes=1
    if (endofgallerymsg!="") {
        creatediv();
        positiondiv();
    }
    
    if (document.body.filters)
        onresize();
}

window.onload = fillup;

// ******************************
//
// ******************************
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;
}


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="";
}
}