// ==============================================================
// 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:
// ==============================================================
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" id="up' + count + '"><a href="#" onmouseover="theScroll[' + count + '].scrollNorth(\'' + count + '\')" onmouseout="theScroll[' + count + '].endScroll()" onclick="return false;"><img src="/App_themes/images/MasterPage/up.gif" width="14" height="14"></a></div><div class="dn"  id="dn' + count + '""><a href="#" onmouseover="theScroll[' + count + '].scrollSouth(\'' + count + '\')" onmouseout="theScroll[' + count + '].endScroll()" onclick="return false;"><img src="/App_themes/images/MasterPage/dn.gif" width="14" height="14"></a></div><div class="thumb" id="' + thumb + '" style="left:0px;top:0px;"><img src="/App_themes/images/MasterPage/thumb.gif" width="14" height="14"></div>';
    if (document.getElementById(root)) {
        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 + 0) + "px";
        thisup.style.left = parseInt(minX + 0) + "px";
        thisdn.style.left = parseInt(minX + 0) + "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 + 0, maxX + 0, minY, maxY);

        // 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);
		}
	}
})