// Made by geeeet@ghtml.com
// Keep these two lines and you're free to use this code

// Touch me here :-)

// And now... go to the bottom of the page...

// Browser detection
var dom = document.getElementById ? true:false;
var nn4 = document.layers ? true:false;
var ie4 = document.all ? true:false;


var mouseY; // Mouse Y position onclick
var mouseX; // Mouse X position onclick

var clickUp = false; // If click on up-arrow
var clickDown = false; // If click on down-arrow
var clickDrag = false; // If click on scrollbar
var clickAbove = false; // If click above scrollbar
var clickBelow = false; // If click below scrollbar

///naldu
var clickLeft = false; // If click on left-arrow
var clickRight = false; // If click on right-arrow
var clickDragHor = false; // If click on hoizontal scrollbar
var clickLeftSide = false; // If click left side scrollbar
var clickRightSide = false; // If click right side scrollbar




var timer = setTimeout("",500); // Repeat variable
var upL; // Up-arrow X
var upT; // Up-arrow Y
var downL; // Down-arrow X
var downT; // Down-arrow Y
var dragL; // Scrollbar X
var dragT; // Scrollbar Y
var rulerL; // Ruler X
var rulerT; // Ruler Y
var contentT; // Content layer Y;
var contentL; // Content layer X;
var contentH; // Content height
var contentClipH; // Content clip height

//naldu
var contentW_minimum; // Minimum content width
var contentW; // Content width
var contentClipW; // Content clip width
contentL=1;

var scrollLength; // Number of pixels scrollbar should move
var startY; // Keeps track of offset between mouse and span
var startX; // Keeps track of offset between mouse and span

// Mousedown
function down(e){
        if((document.layers && e.which!=1) || (document.all && event.button!=1)) return true; // Enables the right mousebutton          
        getMouse(e);
		
		startX = (mouseX - dragL); //naldu
        startY = (mouseY - dragT);
		// If click on up-arrow
        if(mouseX >= upL && (mouseX <= (upL + upW)) && mouseY >= upT && (mouseY <= (upT + upH))){

		
	            clickLeft = true;
                return scrollUp();
        }       
        // Else if click on down-arrow
        else if(mouseX >= downL && (mouseX <= (downL + downW)) && mouseY >= downT && (mouseY <= (downT + downH))){
                clickRight = true;
                return scrollDown();
        }
        // Else if click on scrollbar
        else if(mouseY >= dragT && (mouseY <= (dragT + dragH)) && mouseX >= dragL && (mouseX <= (dragL + dragW))){
                clickDrag = true;
                return false;
        }
        else if(mouseY >= dragT && (mouseY <= (dragT + dragH)) && mouseX >= rulerL && (mouseX <= (rulerL + scrollW))){
                // If click above drag
                if(mouseX < dragL){
                        clickLeftSide = true;
                        clickLeft = true;
                        return scrollUp();
                }
                // Else click below drag
                else{
                        clickRightSide = true;
                        clickRight = true;
                        return scrollDown();
                }
        }
        // If no scrolling is to take place
        else{
                return true;
        }
}

// Drag function
function move(e){
        if(clickDrag && contentW > contentClipW){
			if(mouseY >= dragT-40 && (mouseY <= (dragT + dragH +40)) && mouseX >= dragL && (mouseX <= (dragL + dragW))){
                getMouse(e);
                dragL = (mouseX - startX);
                
                if(dragL < (rulerL))
                        dragL = rulerL;         
                if(dragL > (rulerL + scrollW - dragW))
                        dragL = (rulerL + scrollW - dragW);
                
                contentL = ((dragL - rulerL)*(1/scrollLength));
                contentL = eval('-' + contentL);

                moveTo();
        	}
		}
        // So ie-pc doesn't select gifs
        if(ie4)
                return false;
}

function up(){
        clearTimeout(timer);
        // Resetting variables
        clickUp = false;
        clickDown = false;
        clickDrag = false;
        clickAbove = false;
        clickBelow = false;
        return true;
}

// Reads content layer top
function getT(){
        if(ie4){
                contentT = document.all.content.style.pixelTop;
                contentL = document.all.content.style.pixelLeft;
        }
		else if(nn4){
                contentT = document.contentClip.document.content.top;
                contentL = document.contentClip.document.content.left;
        }
		else if(dom){
                contentT = parseInt(document.getElementById("content").style.top);
                contentL = parseInt(document.getElementById("content").style.left);
		}
}

// Reads mouse X and Y coordinates
function getMouse(e){
        if(ie4){
                mouseY = event.clientY;
                mouseX = event.clientX;
        }
        else if(nn4 || dom){
                mouseY = e.pageY;
                mouseX = e.pageX;
	        }
		
}

// Moves the layer
function moveTo(){
	
        if(dom){
                document.getElementById("content").style.left = contentL + "px";
                document.getElementById("drag").style.left = dragL + "px";
                document.getElementById("ruler").style.left = dragL + "px";
				
        }
		else if(ie4){
                document.all.content.style.left = contentL;
                document.all.ruler.style.left = dragL;
                document.all.drag.style.left = dragL;
        }
        else if(nn4){
                document.contentClip.document.content.left = contentL;
                document.ruler.left = dragL;
                document.drag.left = dragL;
        }
}

// Scrolls left
function scrollUp(){
		getT();
        if(clickLeftSide){
                if(dragL <= (mouseX-(dragW/2)))
                        return up();
        }
		
        if(clickLeft){
                if(contentL < 0){               
                        dragL = dragL - (speed*scrollLength);
                        
                        if(dragL< (rulerL))
                                dragL = rulerL;

                                
                        contentL = contentL + speed;
                        if(contentL > 0)
                                contentL = 0;
                        
                        moveTo();
                        timer = setTimeout("scrollUp()",25);
                }
        }




        return false;
}

// Scrolls right
function scrollDown(){
        getT();
        if(clickRightSide){
                if(dragL >= (mouseX-(dragW/2)))
                        return up();
        }

        if(clickRight){
		
				//alert(contentL)
				//alert(contentW)
				//alert(contentClipW)
				
                if(contentL > -(contentW - contentClipW)){                      
						//alert(contentL);
				
                        dragL = dragL + (speed*scrollLength);
                        if(dragL > (rulerL + scrollW - dragW))
                                dragL = (rulerL + scrollW - dragW);
                        
                        contentL = contentL - speed;
                        if(contentL < -(contentW - contentClipW))
                                contentL = -(contentW - contentClipW);
                        
                        moveTo();
                        timer = setTimeout("scrollDown()",25);
                }
        }
		
		
        return false;
}

// reloads page to position the layers again
function reloadPage(){
        location.reload();
}

// Preload
function eventLoader(){
        if(dom){
                // Up-arrow X and Y variables
                upL = parseInt(document.getElementById("up").style.left);
                upT = parseInt(document.getElementById("up").style.top);
                // Down-arrow X and Y variables
                downL = parseInt(document.getElementById("down").style.left);
                downT = parseInt(document.getElementById("down").style.top);
                // Scrollbar X and Y variables
                dragL = parseInt(document.getElementById("drag").style.left);
                dragT = parseInt(document.getElementById("drag").style.top);
                // Ruler Y variable
                rulerT = parseInt(document.getElementById("ruler").style.top);
                rulerL = parseInt(document.getElementById("ruler").style.left);
                // Height of content layer and clip layer
                contentH = document.getElementById("content").offsetHeight;
                contentClipH = document.getElementById("contentClip").offsetHeight;
                document.getElementById("content").style.top = 0 + "px";

                contentW = document.getElementById("content").offsetWidth;
                contentClipW = document.getElementById("contentClip").offsetWidth;
				//alert(contentW);
				//alert(contentClipW);
				//alert(dragL);
                document.getElementById("content").style.left = 0 + "px";
                
        }
        else if(ie4){
                // Up-arrow X and Y variables
                upL = document.all.up.style.pixelLeft;
                upT = document.all.up.style.pixelTop;           
                // Down-arrow X and Y variables
                downL = document.all.down.style.pixelLeft;
                downT = document.all.down.style.pixelTop;
                // Scrollbar X and Y variables
                dragL = document.all.drag.style.pixelLeft;
                dragT = document.all.drag.style.pixelTop;               
                // Ruler Y variable
                rulerT = document.all.ruler.style.pixelTop;             
                rulerL = document.all.ruler.style.pixelLeft;             
                // Height of content layer and clip layer
                contentH = document.all.content.offsetHeight;
                contentClipH = document.all.contentClip.offsetHeight;
                
				contentW = document.all.content.offsetWidth;
                contentClipW = document.all.contentClip.offsetWidth;

        }
        else if(nn4){
                // Up-arrow X and Y variables
                upL = document.up.left;
                upT = document.up.top;          
                // Down-arrow X and Y variables
                downL = document.down.left;
                downT = document.down.top;              
                // Scrollbar X and Y variables
                dragL = document.drag.left;
                dragT = document.drag.top;              
                // Ruler Y variable
                rulerT = document.ruler.top;
                rulerT = document.ruler.left;
                // Height of content layer and clip layer
                contentH = document.contentClip.document.content.clip.bottom;
                contentClipH = document.contentClip.clip.bottom;
				
                contentW = document.contentClip.document.content.clip.right;
                contentClipW = document.contentClip.clip.right;
        }
		contentW_minimum=contentW;
		contentW=contentW-350;
        //scrollLength = ((scrollH-dragH)/(contentH-contentClipH));
        scrollLength = ((scrollW-dragW)/(contentW-contentClipW));
        // Initializes event capturing
        if(nn4){
                document.captureEvents(Event.MOUSEDOWN | Event.MOUSEMOVE | Event.MOUSEUP)
                window.onresize = reloadPage;
        }

		//contentL=0;
		//dragL=12;
		//moveTo();
		//alert(contentW);
		//alert(contentClipW);


        document.onmousedown = down;
        document.onmousemove = move;
        document.onmouseup = up;
}