scrollerObj.ar = new Array();

function scrollerObj(x,y,w,h,al,hld) {
  this.x=x||0; this.y=y||0; this.w=w; this.h=h; 
  this.al = al || "left"; this.hld = hld;
  this.ctr=1; this.items=new Array(); this.timerId=0;
  
        this.pause      = 0;
        this.spd                = 20;
        this.inc                = 1;
        this.fontFam = "verdana, helvetica, arial, sans-serif";
        this.fontSz     = "12px";
        this.fontClr  = "#000000";
}

function addScrollerItem(txt,url) {
        this.items[this.items.length] = new Array(txt,url);
}

function setScrollerFont(fam,sz,clr) {
        this.fontFam=fam; this.fontSz=sz; this.fontClr=clr;
}

function setScrollerTiming(pause,spd,inc) {
        this.pause=pause; this.spd=spd; this.inc=inc;
}

function createScroller() {
  if (this.created) return;
        this.items[this.items.length] = this.items[0];
        scrollerObj.ar[scrollerObj.ar.length] = this;
  this.obj = "scrollerObj"+scrollerObj.ar.length; eval(this.obj + "=this"); 
        if (document.layers) this.buildN4();
        else this.build();
  this.created = true;
}

function buildScroller() {
  var elem, str;
  if (document.getElementById && document.createElement) {
    elem = document.createElement("div");
    if (typeof this.hld != "undefined") {
      this.holder = document.getElementById(this.hld);
      this.scrWndo = this.holder.appendChild(elem);
    } else {
                  this.scrWndo = document.body.appendChild(elem);
    }
    this.scrWndo.id = "scrWndo"+scrollerObj.ar.length;
                this.scrWndo.style.position = "absolute";
    this.scrWndo.style.visibility = "hidden";
  } else if (document.all) {
    str = '<div id="scrWndo'+scrollerObj.ar.length+'" style="position:absolute; visibility:hidden; "></div>';
    if (typeof this.hld != "undefined") {
      this.holder = document.all[this.hld];
      if (typeof this.holder.innerHTML != "undefined")
        this.holder.innerHTML = str;
    } else {
      document.body.insertAdjacentHTML("beforeEnd",str);
    }
  }
  this.scrWndo = new dynObj("scrWndo"+scrollerObj.ar.length,this.x,this.y,this.w,this.h);
  with (this.scrWndo.css) {
        clip = "rect(0px, "+this.w+"px, "+this.h+"px, 0px)";
                overflow = "hidden"; zIndex=1000;       
        } 
  if (document.getElementById && document.createElement) {
    elem = document.createElement("div");
    this.scrCont = this.scrWndo.el.appendChild(elem);
    this.scrCont.id = "scrCont" + scrollerObj.ar.length;
    this.scrCont.style.position = "absolute";
  } else if (document.all) {
    var str = '<div id="scrCont'+scrollerObj.ar.length+'" style="position:absolute"></div>';
    this.scrWndo.writeLyr(str);
  }
  this.scrCont = new dynObj("scrCont"+scrollerObj.ar.length);
        this.scrCont.css.visibility = "inherit"; 
  this.scrCont.css.zIndex=1;
  this.scrCont.shiftTo(0,0);
  this.wrapItems();
  this.scrWndo.show();
  this.timerId = setTimeout(this.obj + ".controlScroll()",this.pause);
}

function wrapItems() {
   var itemStart, itemEnd, str = "";
  if (this.al == "center") {
    itemStart = '<table width="' + this.w + '" cellpadding="0" cellspacing="0" border="0"><tr><td style="text-align:center; height:' + this.h + 'px" valign="middle">';
    itemEnd = '</td></tr></table>';
  } else if (this.al == "left") {
    itemStart = '<div style="height:' + this.h + 'px">';
    itemEnd = '</div>';
  }
  for (var i=0; i<this.items.length; i++) {
    if (typeof this.items[i][1] != "undefined") {
      str += itemStart + '<a style="text-decoration:none; font-family:'+this.fontFam+'; font-size:'+this.fontSz+'; color:'+this.fontClr+'" href="'+ this.items[i][1] + '">' + this.items[i][0] + '</a>' + itemEnd;
    } else {
      str += itemStart + '<div style="font-family:'+this.fontFam+'; font-size:'+this.fontSz+'; color:'+this.fontClr+'">' + this.items[i][0] + '</div>' + itemEnd;
    }
  }
  this.scrCont.writeLyr(str);
}

function buildScrollerNS4() {
  if (typeof this.hld != "undefined") {
    this.holder = getLyrRef(this.hld,document);
    this.scrWndo = new Layer(this.w,this.holder);
  }
        else this.scrWndo = new Layer(this.w);
        this.scrWndo.resizeTo(this.w,this.h);
        this.scrWndo.moveTo(this.x,this.y);
        var str = '<div id="scrCont'+scrollerObj.ar.length+'" style="position:absolute"></div>';
        this.scrWndo.document.write(str);
        this.scrWndo.document.close();
        this.scrCont = new dynObj("scrCont"+scrollerObj.ar.length);
        this.scrCont.css.visibility = "inherit"; 
  this.scrCont.css.zIndex=1;
  this.scrCont.shiftTo(0,0);
  this.wrapNS4Items();
        this.scrWndo.visibility = "show";
  this.timerId = setTimeout(this.obj + ".controlScroll()",this.pause);
}

function wrapNS4Items() {
        var itemStart, itemEnd, str = "";
        if (this.al=="center") this.v = "middle";
        else this.v = "top";
  itemStart = '<table width="' + this.w + '" cellpadding="0" cellspacing="0" border="0"><tr><td align="'+this.al+'" height="' + this.h + '" valign="'+this.v+'">';
  itemEnd = '</td></tr></table>';
  for (var i=0; i<this.items.length; i++) {
    if (typeof this.items[i][1] != "undefined") {
      str += itemStart + '<a style="text-decoration:none; font-family:'+this.fontFam+'; font-size:'+this.fontSz+'; color:'+this.fontClr+'" href="'+ this.items[i][1] + '">' + this.items[i][0] + '</a>' + itemEnd;
    } else {
      str += itemStart + '<div style="font-family:'+this.fontFam+'; font-size:'+this.fontSz+'; color:'+this.fontClr+'">' + this.items[i][0] + '</div>' + itemEnd;
    }
  }
  this.scrCont.writeLyr(str);
}

function controlScroll() {
        if (this.ctr>this.items.length-1) this.startOver();
        else {
                var y = parseInt(this.scrCont.css.top);
                if (y> -this.h * this.ctr) { 
                        this.scrCont.shiftBy(0,-this.inc);      
                        this.timerId = setTimeout(this.obj+".controlScroll()",this.spd);        
                } else {
                                this.ctr++;
                                this.timerId = setTimeout(this.obj+".controlScroll()",this.pause);      
                }
        }
}

function startOver() {
        this.ctr = 1;
        this.scrCont.shiftTo(0,0);
        this.controlScroll();   
}

scrollerObj.prototype.addItem = addScrollerItem;
scrollerObj.prototype.create = createScroller;
scrollerObj.prototype.setFont = setScrollerFont; 
scrollerObj.prototype.setTiming = setScrollerTiming;
scrollerObj.prototype.buildN4 = buildScrollerNS4; 
scrollerObj.prototype.build = buildScroller;
scrollerObj.prototype.wrapItems = wrapItems;
scrollerObj.prototype.wrapNS4Items = wrapNS4Items;
scrollerObj.prototype.controlScroll = controlScroll;
scrollerObj.prototype.startOver = startOver;

function positionGecko() {
        if (navigator.userAgent.indexOf("Gecko")>-1) {
    for (var i=0; i<scrollerObj.ar.length; i++) {
                        if (scrollerObj.ar[i].holder) {
                                scrollerObj.ar[i].holder.removeChild(scrollerObj.ar[i].scrWndo.el);
                                document.body.appendChild(scrollerObj.ar[i].scrWndo.el);
                                scrollerObj.ar[i].scrWndo.css.zIndex = 1000;
        var x = scrollerObj.ar[i].holder.offsetLeft + scrollerObj.ar[i].x;
                                var y = scrollerObj.ar[i].holder.offsetTop + scrollerObj.ar[i].y;
                                scrollerObj.ar[i].scrWndo.shiftTo(x,y);
                        }
        }
  }
}

function rePosGecko() {
  for (var i=0; i<scrollerObj.ar.length; i++) {
                var x = scrollerObj.ar[i].holder.offsetLeft + scrollerObj.ar[i].x;
                var y = scrollerObj.ar[i].holder.offsetTop + scrollerObj.ar[i].y;
                scrollerObj.ar[i].scrWndo.shiftTo(x,y);
  }
}

function setMouseEvents() {
  for (var i=0; i<scrollerObj.ar.length; i++) {
    scrollerObj.ar[i].scrCont.el.onmouseover = new Function("haltScroll("+i+")")
    scrollerObj.ar[i].scrCont.el.onmouseout = restartScroll;
  }
}

function haltScroll(num) {
  clearTimeout(scrollerObj.ar[num].timerId);
}

function restartScroll(e) {
  var num = parseInt(this.id.slice(7)) - 1;
  e = e? e: window.event? window.event: "";
  if (e) {
    var current = this;
    var related =  e.relatedTarget? e.relatedTarget: e.toElement? e.toElement: "";
                if (related) {
        if (current != related && !contains(current, related)) 
          scrollerObj.ar[num].controlScroll();
      } else scrollerObj.ar[num].controlScroll();
  }
}

function contains(a, b) {
        if (b && b.parentNode) {
          while (b.parentNode)
            if ((b = b.parentNode) == a)
              return true;
          return false;
        } else if (b && b.parentElement) {
                while (b.parentElement)
                    if ((b = b.parentElement) == a)
                      return true;
                  return false;
        }
}