version = parseFloat(navigator.appVersion);
macintosh = navigator.appVersion.indexOf('Mac')>0;
windows = navigator.appVersion.indexOf('Win')>0;
netscape = navigator.appName.indexOf('Netscape');
ie = navigator.appVersion.indexOf("MSIE")>0;
ie4 = ie && version>=4 && version<5;
ie5 = ie && navigator.appVersion.indexOf('5')>0;

var upH;
var upW;
var downH;
var downW;
var dragH;
var dragW;
var scrollH;
var speed = 6;
var dom = document.getElementById ? true:false;
var nn4 = document.layers ? true:false;
var ie4 = document.all ? true:false;
var clickUp = false;
var clickDown = false;
var clickDrag = false;
var clickDrag2 = false;
var clickAbove = false;
var clickBelow = false;
var timer = setTimeout("",500);
var upL;
var upT;
var downL;
var downT;
var dragL;
var dragT;
var rulerL;
var rulerT;
var contentT;
var contentH;
var contentClipH;
var scrollLength;
var startY;

var hFromBot = 20;
var topButtonHeight = 0;

var timer2 = setTimeout("",500);
var upL2;
var upT2;
var downL2;
var downT2;
var dragL2;
var dragT2;
var rulerL2;
var rulerT2;
var contentT2;
var contentH2;
var contentClipH2;
var scrollLength2;
var startY2;

function down(e){
        if((document.layers && e.which!=1) || (document.all && event.button!=1)) return true; // Enables the right mousebutton
        getMouse(e);

        startY  = (mouseY - dragT);
        startY2 = (mouseY - dragT2);

        if(mouseX >= upL && (mouseX <= (upL + upW)) && mouseY >= upT && (mouseY <= (upT + upH))){
                clickUp = true;
                return scrollUp();
        }
        else if(mouseX >= downL && (mouseX <= (downL + downW)) && mouseY >= downT && (mouseY <= (downT + downH))){
                clickDown = true;
                return scrollDown();
        }
        else if(mouseX >= dragL && (mouseX <= (dragL + dragW)) && mouseY >= dragT && (mouseY <= (dragT + dragH))){
                clickDrag = true;
                return false;
        }
        else if(mouseX >= dragL && (mouseX <= (dragL + dragW)) && mouseY >= rulerT && (mouseY <= (rulerT + scrollH))){
                if(mouseY < dragT){
                        clickAbove = true;
                        clickUp = true;
                        return scrollUp();
                }
                else{
                        clickBelow = true;
                        clickDown = true;
                        return scrollDown();
                }
        }
        else{
                if(mouseX >= upL2 && (mouseX <= (upL2 + upW)) && mouseY >= upT2 && (mouseY <= (upT2 + upH))){
                        clickUp = true;
                        return scrollUp2();
                }
                else if(mouseX >= downL2 && (mouseX <= (downL2 + downW)) && mouseY >= downT2 && (mouseY <= (downT2 + downH))){
                        clickDown = true;
                        return scrollDown2();
                }
                else if(mouseX >= dragL2 && (mouseX <= (dragL2 + dragW)) && mouseY >= dragT2 && (mouseY <= (dragT2 + dragH))){
                        clickDrag2 = true;
                        return false;
                }
                else if(mouseX >= dragL2 && (mouseX <= (dragL2 + dragW)) && mouseY >= rulerT2 && (mouseY <= (rulerT2 + scrollH))){
                        if(mouseY < dragT2){
                               clickAbove = true;
                               clickUp = true;
                               return scrollUp2();
                        }
                        else{
                             clickBelow = true;
                             clickDown = true;
                             return scrollDown2();
                        }
                }
                else{
                     return true;
                }
        }
}
function move(e){
        if(clickDrag && contentH > contentClipH){
                getMouse(e);
                dragT = (mouseY - startY);

                if(dragT < (rulerT))
                        dragT = rulerT;
                if(dragT > (rulerT + scrollH - dragH))
                        dragT = (rulerT + scrollH - dragH);

                contentT = ((dragT - rulerT)*(1/scrollLength));
                contentT = eval('-' + contentT);

                moveTo();

                if(ie4)
                        return false;
        } else {
                if(clickDrag2 && contentH2 > contentClipH2){
                   getMouse(e);
                   dragT2 = (mouseY - startY2);

                   if(dragT2 < (rulerT2))
                        dragT2 = rulerT2;
                   if(dragT2 > (rulerT2 + scrollH - dragH))
                        dragT2 = (rulerT2 + scrollH - dragH);

                   contentT2 = ((dragT2 - rulerT2)*(1/scrollLength2));
                   contentT2 = eval('-' + contentT2);

                   moveTo2();

                   if(ie4)
                        return false;
                }
        }
}
function up(){
        clearTimeout(timer);
        clearTimeout(timer2);
        clickUp = false;
        clickDown = false;
        clickDrag = false;
        clickDrag2 = false;
        clickAbove = false;
        clickBelow = false;
        return true;
}
function getT(){
        if(ie4)
                contentT = document.all.content.style.pixelTop;
        else if(nn4)
                contentT = document.contentClip.document.content.top;
        else if(dom)
                contentT = parseInt(document.getElementById("content").style.top);
}

function getMouse(e){
        if(ie4){
                mouseY = event.clientY + document.body.scrollTop;
                mouseX = event.clientX + document.body.scrollLeft;
        }
        else if(nn4 || dom){
                mouseY = e.pageY;
                mouseX = e.pageX;
        }
}
function moveTo(){
        if(ie4){
                document.all.content.style.top = contentT;
                document.all.ruler.style.top = dragT;
                document.all.drag.style.top = dragT;
        }
        else if(nn4){
                document.contentClip.document.content.top = contentT;
                document.ruler.top = dragT;
                document.drag.top = dragT;
        }
        else if(dom){
                document.getElementById("content").style.top = contentT + "px";
                document.getElementById("drag").style.top = dragT + "px";
                document.getElementById("ruler").style.top = dragT + "px";
        }
}

function scrollUp(){
        getT();

        if(clickAbove){
                if(dragT <= (mouseY-(dragH/2)))
                        return up();
        }

        if(clickUp){
                if(contentT < 0){
                        dragT = dragT - (speed*scrollLength);

                        if(dragT < (rulerT))
                                dragT = rulerT;

                        contentT = contentT + speed;
                        if(contentT > 0)
                                contentT = 0;

                        moveTo();
                        timer = setTimeout("scrollUp()",25);
                }
        }
        return false;
}

function scrollDown(){
        getT();

        if(clickBelow){
                if(dragT >= (mouseY-(dragH/2)))
                        return up();
        }

        if(clickDown){
                if(contentT > -(contentH - contentClipH)){
                        dragT = dragT + (speed*scrollLength);
                        if(dragT > (rulerT + scrollH - dragH))
                                dragT = (rulerT + scrollH - dragH);

                        contentT = contentT - speed;
                        if(contentT < -(contentH - contentClipH))
                                contentT = -(contentH - contentClipH);

                        moveTo();
                        timer = setTimeout("scrollDown()",25);
                }
        }
        return false;
}

function reloadPage(){
        location.reload();
}
function backtotop() {
        clearTimeout(timer);
        clickUp = false;
        clickDown = false;
        clickDrag = false;
        clickAbove = false;
        clickBelow = false;
        if(ie4){
                dragT = rulerT = upT + 8;
                contentH = parseInt(document.all.content.scrollHeight);
                contentClipH = parseInt(document.all.contentClip.style.height);
                document.all.content.style.top = 0;
                document.all.drag.style.top = dragT;
                document.all.drag.style.left = dragL;
                document.all.ruler.style.top = dragT;
                document.all.ruler.style.left = dragL;
        }
        else if(nn4){
                dragT = rulerT = upT + 8;
                contentH = document.contentClip.document.content.clip.bottom;
                contentClipH = document.contentClip.clip.bottom;
                document.content.top = 0;
                document.drag.top = dragT;
                document.drag.left = dragL;
                document.ruler.top = dragT;
                document.ruler.left = dragL;
        }
        else if(dom){
                dragT = rulerT = upT + 8;
                contentH = parseInt(document.getElementById("content").offsetHeight);
                contentClipH = parseInt(document.getElementById("contentClip").offsetHeight);
                document.getElementById("content").style.top = 0 + "px";
                document.getElementById("drag").style.top = dragT + "px";
                document.getElementById("drag").style.left = dragL + "px";
                document.getElementById("ruler").style.top = dragT + "px";
                document.getElementById("ruler").style.left = dragL + "px";
        }
}


function eventLoader(){
        if(ie4){
                upH = downH = parseInt(document.all.up.style.height);
                upW = downW = parseInt(document.all.up.style.width);
                dragH = parseInt(document.all.drag.style.height);
                dragW = parseInt(document.all.drag.style.width);
				scrollH = parseInt(document.all.scrollObj1.style.height);

                upL = downL = document.all.up.style.pixelLeft;
                upT   = document.all.up.style.pixelTop;
                downT = document.all.down.style.pixelTop;
                dragL = document.all.drag.style.pixelLeft;
                dragT = rulerT = document.all.drag.style.pixelTop;
                contentH = parseInt(document.all.content.scrollHeight);
                contentClipH = parseInt(document.all.contentClip.style.height);
                document.all.content.style.top = 0;
                document.all.drag.style.top  = dragT;
                document.all.drag.style.left = dragL;
                document.all.ruler.style.top  = dragT;
                document.all.ruler.style.left = dragL;
				if (contentH-topButtonHeight < contentClipH) {
					document.all.scrollObj1.style.display = 'none';
					document.all.drag.style.display = 'none';
//					document.all.totopLink1.style.display = 'none';
					document.all.up.style.display   = 'none';
					document.all.down.style.display = 'none';
				}
        }
        else if(nn4){
                upH = downH = document.up.bottom - document.up.top;
                upW = downW = document.up.right - document.up.left;
                dragH = document.drag.bottom - document.drag.top;
                dragW = document.drag.right - document.drag.left;
                scrollH = document.scrollObj1.bottom - document.scrollObj1.top;

                upL = downL = document.up.left;
                upT = document.up.top;
                downT = document.down.top;
                dragL = document.drag.left;
                dragT = rulerT = document.drag.top;
                contentH = document.contentClip.document.content.clip.bottom;
                contentClipH = document.contentClip.clip.bottom;
                document.content.top = 0;
                document.drag.top  = dragT;
                document.drag.left = dragL;
                document.ruler.top  = dragT;
                document.ruler.left = dragL;
				if (contentH-topButtonHeight < contentClipH) {
					document.scrollObj1.style.display = 'none';
					document.drag.style.display = 'none';
//					document.totopLink1.style.display = 'none';
					document.up.style.display   = 'none';
					document.down.style.display = 'none';
			}
        }
        else if(dom){
                upH = downH = parseInt(document.getElementById("up").style.height);
                upW = downW = parseInt(document.getElementById("up").style.width);
                dragH = parseInt(document.getElementById("drag").style.height);
                dragW = parseInt(document.getElementById("drag").style.width);
                scrollH = parseInt(document.getElementById("scrollObj1").style.height);

                upL = downL = parseInt(document.getElementById("up").style.left);
                upT = parseInt(document.getElementById("up").style.top);
                downT = parseInt(document.getElementById("down").style.top);
                dragL = parseInt(document.getElementById("drag").style.left);
                dragT = rulerT = parseInt(document.getElementById("drag").style.top);
                contentH = parseInt(document.getElementById("content").offsetHeight);
                contentClipH = parseInt(document.getElementById("contentClip").offsetHeight);
                document.getElementById("content").style.top = 0 + "px";
                document.getElementById("drag").style.top   = dragT + "px";
                document.getElementById("drag").style.left  = dragL + "px";
                document.getElementById("ruler").style.top  = dragT + "px";
                document.getElementById("ruler").style.left = dragL + "px";
				if (contentH-topButtonHeight < contentClipH) {
					document.getElementById("scrollObj1").style.display = 'none';
					document.getElementById("drag").style.display = 'none';
//					document.getElementById("totopLink1").style.display = 'none';
					document.getElementById("up").style.display   = 'none';
					document.getElementById("down").style.display = 'none';
			}
       }
        scrollH = scrollH - hFromBot;
		scrollLength = ((scrollH-dragH)/(contentH-contentClipH));
        if(nn4){
                document.captureEvents(Event.MOUSEDOWN | Event.MOUSEMOVE | Event.MOUSEUP);
                window.onresize = reloadPage;
        }
        document.onmousedown = down;
        document.onmousemove = move;
        document.onmouseup = up;
}