// Coded by Travis Beckham http://www.squidfingers.com | http://www.podlob.com
// If want to use this code, feel free to do so, but please leave this message intact.
// --- version date: 01/24/03
// Minor modifications by Ryan Quigley for exhibit-E.com - 01/24/03 
var dom = document.getElementById;
var iex = document.all;
var scrollMultiplier = 3;

function eeSaddEvent(A, B){
    this[A] = B
}

function eeSremoveEvent(A){
    this[A] = null
}

function eeSgetElement(A, C){
    C = C ? "document." + C + "." : "";
    var B = dom ? document.getElementById(A) : iex ? document.all[A] : false;
    B.css = B.style;
    B.getTop = function(){
        return parseInt(B.css.top) || 0
    };
    B.setTop = function(D){
        B.css.top = D + "px"
    };
    B.getHeight = function(){
        return B.offsetHeight
    };
    B.getClipHeight = function(){
        return B.offsetHeight
    };
    B.hideVis = function(){
        B.css.visibility = "hidden"
    };
    B.eeSaddEvent = eeSaddEvent;
    B.eeSremoveEvent = eeSremoveEvent;
    return B
}

function getYMouse(A){
    if (!A) {
        var A = window.event
    }
    if (A.PageY) {
        return A.pageY
    }
    else {
        if (A.clientY) {
            return A.clientY + document.body.scrollTop
        }
    }
}

document.eeSaddEvent = eeSaddEvent;
document.eeSremoveEvent = eeSremoveEvent;
ScrollObj = function(speed, dragHeight, trackHeight, trackObj, upObj, downObj, dragObj, contentMaskObj, contentObj){
	this.speed = speed;
    this.dragHeight = dragHeight;
    this.trackHeight = trackHeight;
    this.trackObj = eeSgetElement(trackObj);
    this.upObj = eeSgetElement(upObj);
    this.downObj = eeSgetElement(downObj);
    this.dragObj = eeSgetElement(dragObj);
    this.contentMaskObj = eeSgetElement(contentMaskObj);
    this.contentObj = eeSgetElement(contentObj, contentMaskObj);
    this.obj = contentObj + "Object";
    eval(this.obj + "=this");
    this.trackTop = this.dragObj.getTop();
    this.trackLength = this.trackHeight - this.dragHeight;
    this.trackBottom = this.trackTop + this.trackLength;
    this.contentMaskHeight = this.contentMaskObj.getClipHeight();
    this.contentHeight = this.contentObj.getHeight();
    this.contentLength = this.contentHeight - this.contentMaskHeight;
    this.scrollLength = this.trackLength / this.contentLength;
    this.scrollTimer = null;
    if (this.contentHeight <= this.contentMaskHeight) {
        this.dragObj.hideVis();
        this.upObj.hideVis();
        this.downObj.hideVis();
        this.trackObj.hideVis()
    }
    else {
        var self = this;
/*        this.contentMaskObj.eeSaddEvent("onmousewheel", function(e){
			var raw = e.detail ? e.detail : e.wheelDelta;
			var normal = e.detail ? e.detail * -1 : e.wheelDelta / 40;

			if (normal > 0) {
				self.scroll(self.speed * scrollMultiplier);
			}
			else {
				self.scroll(-self.speed * scrollMultiplier);
			}
			self.stopScroll();
  
            return false
        }); */
        this.trackObj.eeSaddEvent("onmousedown", function(e){
            self.scrollJump(e);
            return false
        });
        this.upObj.eeSaddEvent("onmousedown", function(){
            self.scroll(self.speed);
            return false
        });
        this.upObj.eeSaddEvent("onmouseup", function(){
            self.stopScroll()
        });
        this.upObj.eeSaddEvent("onmouseout", function(){
            self.stopScroll()
        });
        this.downObj.eeSaddEvent("onmousedown", function(){
            self.scroll(-self.speed);
            return false
        });
        this.downObj.eeSaddEvent("onmouseup", function(){
            self.stopScroll()
        });
        this.downObj.eeSaddEvent("onmouseout", function(){
            self.stopScroll()
        });
        this.dragObj.eeSaddEvent("onmousedown", function(e){
            self.startDrag(e);
            return false
        });
        if (iex) {
            this.dragObj.eeSaddEvent("ondragstart", function(){
                return false
            })
        }
    }
};
ScrollObj.prototype.startDrag = function(B){
    this.dragStartMouse = getYMouse(B);
    this.dragStartOffset = this.dragObj.getTop();
    var A = this;
    document.eeSaddEvent("onmousemove", function(C){
        A.drag(C)
    });
    document.eeSaddEvent("onmouseup", function(){
        A.stopDrag()
    })
};
ScrollObj.prototype.stopDrag = function(){
    document.eeSremoveEvent("onmousemove");
    document.eeSremoveEvent("onmouseup")
};
ScrollObj.prototype.drag = function(F){
    var A = getYMouse(F);
    var C = A - this.dragStartMouse;
    var E = this.dragStartOffset + C;
    var B = (E < this.trackTop) ? this.trackTop : (E > this.trackBottom) ? this.trackBottom : E;
    this.dragObj.setTop(B);
    var D = -(B - this.trackTop) * (1 / this.scrollLength);
    this.contentObj.setTop(D)
};
ScrollObj.prototype.scroll = function(C){
    var B = this.contentObj.getTop() + C;
    var A = this.trackTop - Math.round(this.contentObj.getTop() * (this.trackLength / this.contentLength));
    if (B > 0) {
        B = 0
    }
    else {
        if (B < -this.contentLength) {
            B = -this.contentLength
        }
    }
    if (A < this.trackTop) {
        A = this.trackTop
    }
    else {
        if (A > this.trackBottom) {
            A = this.trackBottom
        }
    }
    this.contentObj.setTop(B);
    this.dragObj.setTop(A);
    this.scrollTimer = window.setTimeout(this.obj + ".scroll(" + C + ")", 25)
};
ScrollObj.prototype.stopScroll = function(){
    if (this.scrollTimer) {
        window.clearTimeout(this.scrollTimer);
        this.scrollTimer = null
    }
};
ScrollObj.prototype.scrollJump = function(E){
    var A = getYMouse(E);
    var D = A - findPosY(this.trackObj);
    var B = (D < this.trackTop) ? this.trackTop : (D > this.trackBottom) ? this.trackBottom : D;
    this.dragObj.setTop(B);
    var C = -(B - this.trackTop) * (1 / this.scrollLength);
    this.contentObj.setTop(C)
};
ScrollObj.prototype.syncBarPosToContent = function(B){
    if (B) {
        var A = this.trackTop - Math.round(B * (this.trackLength / this.contentLength))
    }
    else {
        var A = this.trackTop - Math.round(this.contentObj.getTop() * (this.trackLength / this.contentLength))
    }
    this.dragObj.setTop(A)
};

function findPosY(B){
    var A = 0;
    if (B.offsetParent) {
        while (B.offsetParent) {
            A += B.offsetTop;
            B = B.offsetParent
        }
    }
    else {
        if (B.y) {
            A += B.y
        }
    }
    return A
};