// ==============================================================
// HANDLES SCROLLER/S
// Modified from Aaron Boodman http://webapp.youngpup.net/?request=/components/ypSimpleScroll.xml
// mixed ypSimpleScroll with dom-drag script and allowed multiple scrolelrs through array instances
// (c)2004 Sergi Meseguer (http://zigotica.com/), 04/2004:
// Modified by J Duffin, Jordan Group LLC (http://www.jordangroupusa.com), 04/2007:
// ==============================================================
var theHandle = []; var theRoot = []; var theThumb = []; var theScroll = []; var thumbTravel = []; var ratio = [];

function instantiateScroller(count, id, left, top, width, height, speed){
  if(document.getElementById) {
    theScroll[count] = new ypSimpleScroll(id, left, top, width, height, speed);
  }
}

function createDragger(count, handler, root, thumb, minX, maxX, minY, maxY){
    var buttons = '<div class="up" style="margin-top:20px;" id="up'+count+'">'+
                  '<a href="#" onmouseover="theScroll['+count+'].scrollNorth(\''+count+'\')" '+
                  'onmouseout="theScroll['+count+'].endScroll()" onclick="return false;">'+
                  '<img src="img/textScrollUp.gif" width="11" height="11" style="border:none;"></a></div>'+
                  '<div class="dn" style="margin-top:20px;" id="dn'+count+'"">'+
                  '<a href="#" onmouseover="theScroll['+count+'].scrollSouth(\''+count+'\')" '+
                  'onmouseout="theScroll['+count+'].endScroll()" onclick="return false;">'+
                  '<img src="img/textScrollDown.gif" width="11" height="11" style="border:none;"></a></div>'+
                  '<div class="thumb" style="margin-top:20px;" id="'+thumb+'" style="left: 135px; top: 15px;">'+
                  '<img src="img/scrollThumb.gif" width="11" height="50" style="border:none;"></div>';
    
    
    document.getElementById(root).innerHTML = buttons + document.getElementById(root).innerHTML;

    theRoot[count]   = document.getElementById(root);
    theThumb[count]  = document.getElementById(thumb);
    var thisup = document.getElementById("up"+count);
    var thisdn = document.getElementById("dn"+count);
    theThumb[count].style.left = parseInt(minX+15) + "px";
    thisup.style.left = parseInt(minX+15) + "px";
    thisdn.style.left = parseInt(minX+15) + "px";
    theThumb[count].style.border =0;
    theThumb[count].style.top = parseInt(minY) + "px";
    thisup.style.top = 0 + "px";
    thisdn.style.top = parseInt(minY+maxY) + "px";
    //thisdn.style.top = 15 + "px";

    theScroll[count].load();

    //Drag.init(theHandle[count], theRoot[count]); //not draggable on screen
    Drag.init(theThumb[count], null, minX+15, maxX+15, minY, maxY-40);
    
    // the number of pixels the thumb can travel vertically (max - min)
    thumbTravel[count] = theThumb[count].maxY - theThumb[count].minY;

    // the ratio between scroller movement and thumbMovement
    ratio[count] = theScroll[count].scrollH / thumbTravel[count];

    theThumb[count].onDrag = function(x, y) {
      theScroll[count].jumpTo(null, Math.round((y - theThumb[count].minY) * ratio[count]));
    }
}  

// INITIALIZER:
// ==============================================================
// ala Simon Willison http://simon.incutio.com/archive/2004/05/26/addLoadEvent
function addLoadEvent(fn) {
      var old = window.onload;
      if (typeof window.onload != 'function') {
         window.onload = fn;
      }
      else {
         window.onload = function() {
         old();
         fn();
         }
      }
   }
addLoadEvent(function(){
    if(theScroll.length>0) {
    for(var i=0;i<theScroll.length;i++){
      createDragger(i, "handle"+i, "root"+i, "thumb"+i, theScroll[i].clipW, theScroll[i].clipW, 15, theScroll[i].clipH-30);
    }
  }
})