// JavaScript Document
/***********************************************
* CMotion Image Gallery- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* Visit http://www.dynamicDrive.com for source code
* Last updated Mar 15th, 04'. Added "End of Gallery" message.
* This copyright notice must stay intact for legal use
***********************************************/

var restarea=6 //1) width of the "neutral" area in the center of the gallery in px
var maxspeed=2 //2) top scroll speed in pixels. Script auto creates a range from 0 to top speed.
var endofgallerymsg="" //3) message to show at end of gallery. Enter "" to disable message.


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

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

if (iedom)
    cross_scroll=document.getElementById? document.getElementById("motiongallery") : document.all.motiongallery

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(){
    menuheight=parseInt(crossmain.offsetHeight)
    mainobjoffsetH=getposOffset(crossmain, "top")
    statusdiv.style.left=mainobjoffset+(menuwidth/2)-(statusdiv.offsetWidth/2)+"px"
    statusdiv.style.top=menuheight+mainobjoffsetH-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 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")
            //end of album - get next 20 pics
        }
    }
    lefttime=setTimeout("moveleft()",20)
}

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";
            //showhidediv("hidden")
        }
    }
    righttime=setTimeout("moveright()",20)
}

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

function stopmotion(e){   
    if (window.event || (e && e.currentTarget && e.currentTarget!= e.relatedTarget && true)){
        if (window.lefttime) clearTimeout(lefttime)
        if (window.righttime) clearTimeout(righttime)
        movestate=""
    }
}
function fillup(){
    if (iedom){        
        crossmain=document.getElementById? document.getElementById("motioncontainer") : document.all.motioncontainer
        crossleft=document.getElementById? document.getElementById("motionleft") : document.all.motionleft
        crossright=document.getElementById? document.getElementById("motionright") : document.all.motionright
        menuwidth=parseInt(crossmain.style.width)
        mainobjoffset=getposOffset(crossmain, "left")
        //75 is the actual width of the small thumb + ? (spaces between (2px padding + 1px border) * 2)
        actualwidth = 75*imageCount + imageCount*6; //CATENATION gallery is 3 thumbs wide
        crossleft.onmousemove=function(e){
            motionengine(e)
        }
        crossright.onmousemove=function(e){
            motionengine(e)
        }

        crossleft.onmouseout=function(e){
            stopmotion(e)
            //showhidediv("hidden")
        }
        crossright.onmouseout=function(e){
            stopmotion(e)
            //showhidediv("hidden")
        }
    }
    loadedyes=1
    if (endofgallerymsg!=""){
        creatediv()
        positiondiv()
    }
}