/***********************************************
* 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=6;
 //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=1000;
 //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='<span style="font-size: 11px;"><p><b></b></p></span>';

var scrollleftmsg='<span style="cursor: pointer; font-size: 11px;"><p><b>&lt; scroll</b></p></span>';
var scrollrightmsg='<span style="cursor: pointer; font-size: 11px;"><p><b>scroll &gt;</b></p></span>';

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(){
    //Create the 'End of Gallery' DIV
    statusdiv=document.createElement("div");
    statusdiv.setAttribute("id","statusdiv");
    document.body.appendChild(statusdiv);
    statusdiv=document.getElementById("statusdiv");
    statusdiv.innerHTML=endofgallerymsg;

    //Scroll Left DIV
    scroll_left_div=document.createElement("div");
    scroll_left_div.setAttribute("id","scroll_left_div");
    document.body.appendChild(scroll_left_div);
    scroll_left_div=document.getElementById("scroll_left_div");
    scroll_left_div.innerHTML=scrollleftmsg;

    //Scroll Right DIV
    scroll_right_div=document.createElement("div");
    scroll_right_div.setAttribute("id","scroll_right_div");
    document.body.appendChild(scroll_right_div);
    scroll_right_div=document.getElementById("scroll_right_div");
    scroll_right_div.innerHTML=scrollrightmsg;
}

function positiondiv(){
    var mainobjoffset=getposOffset(crossmain, "left"),    
    menuheight=parseInt(crossmain.offsetHeight),
    mainobjoffsetH=getposOffset(crossmain, "top");
    var mainobjoffsetRight;
    mainobjoffsetRight = menuwidth + mainobjoffset;
    //Update the Position of the 'End of Gallery' DIV
    statusdiv.style.position="absolute";
    statusdiv.style.left=mainobjoffset+(menuwidth/2)-(statusdiv.offsetWidth/2)+"px";    
    statusdiv.style.top=menuheight+mainobjoffsetH+"px";
    
    scroll_left_div.style.position="absolute";
    scroll_left_div.style.left=mainobjoffset;
    scroll_left_div.style.top=menuheight+mainobjoffsetH+"px";

    scroll_right_div.style.position="absolute";
    scroll_right_div.style.left=mainobjoffsetRight-scroll_right_div.offsetWidth;
    scroll_right_div.style.top=menuheight+mainobjoffsetH+"px";
    
    
}

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

function showhide_scroll_left_div(what){
    if (scrollleftmsg!="") {
        positiondiv();
        scroll_left_div.style.visibility=what;
    }
}

function showhide_scroll_right_div(what){
    if (scrollrightmsg!="") {
        positiondiv();
        scroll_right_div.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 display_scroll_buttons () {

        if (iedom&&parseInt(cross_scroll.style.left)>(menuwidth-actualwidth)){
            showhide_scroll_right_div("visible");
        }
        else {
            showhide_scroll_right_div("hidden");
        }

        if (iedom&&parseInt(cross_scroll.style.left)<0){
            showhide_scroll_left_div("visible");
        }
        else {
            showhide_scroll_left_div("hidden");
        }

}

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);
    display_scroll_buttons();
}

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");
        }
        else
            showhidediv("visible");
    }
    righttime=setTimeout("moveright()",10);
    display_scroll_buttons();
}

function motionengine(e){
    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;
       
    display_scroll_buttons();
    
}

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="";
}
}

function fillup(){
    if (iedom){
        crossmain=document.getElementById? document.getElementById("motioncontainer") : document.all.motioncontainer;
        scroll_left_div=document.getElementById? document.getElementById("scroll_left_div") : document.all.scroll_left_div;
        scroll_right_div=document.getElementById? document.getElementById("scroll_right_div") : document.all.scroll_right_div;
        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;
        //changed by andrew muller 13/09/2007
        actualwidth=document.getElementById? document.getElementById("motiongallery").offsetWidth : document.all['trueContainer'].offsetWidth;
        if (startpos)
        cross_scroll.style.left=(menuwidth-actualwidth)/startpos+'px';
        
        crossmain.onmousemove=function(e){
            motionengine(e);
        }

        crossmain.onmouseout=function(e){
            stopmotion(e);
            showhidediv("hidden");
        }


    }
    loadedyes=1
    if (endofgallerymsg!=""){
    creatediv();
    positiondiv();
    }
    if (document.body.filters)
        onresize()
    display_scroll_buttons();
    
    scroll_left_div.onmousedown=function(e){
        clearTimeout(lefttime); 
        scrollspeed=maxspeed/2;
        moveright();
    }

    scroll_left_div.onmouseup=function(e){
        stopmotion(e);
    }
    
    scroll_right_div.onmousedown=function(e){
        clearTimeout(lefttime); 
        scrollspeed=maxspeed/2;
        moveleft();
    }

    scroll_right_div.onmouseup=function(e){
        stopmotion(e);
    }
    
}
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;
}