// script.aculo.us slider.js v1.7.0, Fri Jan 19 19:16:36 CET 2007

// Copyright (c) 2005, 2006 Marty Haught, Thomas Fuchs 
//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

function K2Slider(handle, track, options) {
	var self = this;

	this.handle  = jQuery(handle);
    this.track   = jQuery(track);
    this.options = options || {};

    this.value     = this.options.value || 0;

    this.maximum   = this.options.maximum || 1;
    this.minimum   = this.options.minimum || 0;

    this.trackLength  = this.track.width();
    this.handleLength = this.handle.width();
	this.handle.css('position', 'absolute');

    this.active   = false;
    this.dragging = false;

    this.setValue(this.value);
   
    this.handle.mousedown(function(event) {
		self.active = true;

        var pointer	= self.pointerX(event);
		var offset	= self.track.offset();

		self.setValue(
			self.translateToValue(
				pointer-offset.left-(self.handleLength/2)
          	)
		);

		var offset = self.handle.offset();
		self.offsetX = (pointer - offset.left);
	});

	this.track.mousedown(function(event) {
		var offset	= self.track.offset();
        var pointer	= self.pointerX(event);

		self.setValue(
			self.translateToValue(
				pointer-offset.left-(self.handleLength/2)
          	)
		);
	});

	jQuery(document).mouseup(function(event){
		if (self.active && self.dragging) {
			self.active = false;
			self.dragging = false;

			self.updateFinished(self);
		}
		self.active = false;
		self.dragging = false;
	});

	jQuery(document).mousemove(function(event){
		if (self.active) {
			if (!self.dragging) self.dragging = true;

			self.draw(event);

			// fix AppleWebKit rendering
			if (navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
		}
	});

	this.initialized = true;
};

K2Slider.prototype.getNearestValue = function(value) {
	if (value > this.maximum) return this.maximum;
	if (value < this.minimum) return this.minimum;
	return value;
};

k2slider.prototype.setvalue = function(value) {
	this.value = this.getnearestvalue(value);

	this.handle.css('left', this.translatetopx(this.value));
   
	if (!this.dragging || !this.event) this.updatefinished(this);
};

k2slider.prototype.setvalueby = function(delta) {
	this.setvalue(this.value + delta);
};

k2slider.prototype.translatetopx = function(value) {
	return math.round(
		((this.tracklength-this.handlelength)/(this.maximum-this.minimum)) * 
		(value - this.minimum)) + "px";
};

k2slider.prototype.translatetovalue = function(offset) {
	return math.round(
		((offset/(this.tracklength-this.handlelength) * 
		(this.maximum-this.minimum)) + this.minimum));
};

k2slider.prototype.draw = function(event) {
	var pointer = this.pointerx(event);
	var offset	= this.track.offset();
	pointer		-= this.offsetx + offset.left;

    this.event = event;
	this.setvalue( this.translatetovalue(pointer) );

	if (this.initialized && this.options.onslide)
		this.options.onslide(this.value);
};

k2slider.prototype.updatefinished = function(self) {
	if (self.initialized && self.options.onchange) 
		self.options.onchange(self.value);

	self.event = null;
};

k2slider.prototype.pointerx = function(event) {
	return event.pagex || (event.clientx +
		(document.documentelement.scrollleft || document.body.scrollleft));
};

k2slider.prototype.isleftclick = function(event) {
	return (((event.which) && (event.which == 1)) ||
		((event.button) && (event.button == 1)));
};
 this.minimum)="" return="" this.minimum;="" return="" value;="" };="" k2slider.prototype.setvalue="function(value)" {="" this.value="this.getNearestValue(value);" this.handle.css('left',="" this.translatetopx(this.value));="" if="" (!this.dragging="" ||="" !this.event)="" this.updatefinished(this);="" };="" k2slider.prototype.setvalueby="function(delta)" {="" this.setvalue(this.value="" +="" delta);="" };="" k2slider.prototype.translatetopx="function(value)" {="" return="" math.round(="" ((this.tracklength-this.handlelength)/(this.maximum-this.minimum))="" *="" (value="" -="" this.minimum))="" +="" "px";="" };="" k2slider.prototype.translatetovalue="function(offset)" {="" return="" math.round(="" ((offset/(this.tracklength-this.handlelength)="" *="" (this.maximum-this.minimum))="" +="" this.minimum));="" };="" k2slider.prototype.draw="function(event)" {="" var="" pointer="this.pointerX(event);" var="" offset="this.track.offset();" pointer="" -="this.offsetX" +="" offset.left;="" this.event="event;" this.setvalue(="" this.translatetovalue(pointer)="" );="" if="" (this.initialized="" &&="" this.options.onslide)="" this.options.onslide(this.value);="" };="" k2slider.prototype.updatefinished="function(self)" {="" if="" (self.initialized="" &&="" self.options.onchange)="" self.options.onchange(self.value);="" self.event="null;" };="" k2slider.prototype.pointerx="function(event)" {="" return="" event.pagex="" ||="" (event.clientx="" +="" (document.documentelement.scrollleft="" ||="" document.body.scrollleft));="" };="" k2slider.prototype.isleftclick="function(event)" {="" return="" (((event.which)="" &&="" (event.which="=" 1))="" ||="" ((event.button)="" &&="" (event.button="=" 1)));="" };=""></ this.minimum) return this.minimum;
	return value;
};

k2slider.prototype.setvalue = function(value) {
	this.value = this.getnearestvalue(value);

	this.handle.css('left', this.translatetopx(this.value));
   
	if (!this.dragging || !this.event) this.updatefinished(this);
};

k2slider.prototype.setvalueby = function(delta) {
	this.setvalue(this.value + delta);
};

k2slider.prototype.translatetopx = function(value) {
	return math.round(
		((this.tracklength-this.handlelength)/(this.maximum-this.minimum)) * 
		(value - this.minimum)) + "px";
};

k2slider.prototype.translatetovalue = function(offset) {
	return math.round(
		((offset/(this.tracklength-this.handlelength) * 
		(this.maximum-this.minimum)) + this.minimum));
};

k2slider.prototype.draw = function(event) {
	var pointer = this.pointerx(event);
	var offset	= this.track.offset();
	pointer		-= this.offsetx + offset.left;

    this.event = event;
	this.setvalue( this.translatetovalue(pointer) );

	if (this.initialized && this.options.onslide)
		this.options.onslide(this.value);
};

k2slider.prototype.updatefinished = function(self) {
	if (self.initialized && self.options.onchange) 
		self.options.onchange(self.value);

	self.event = null;
};

k2slider.prototype.pointerx = function(event) {
	return event.pagex || (event.clientx +
		(document.documentelement.scrollleft || document.body.scrollleft));
};

k2slider.prototype.isleftclick = function(event) {
	return (((event.which) && (event.which == 1)) ||
		((event.button) && (event.button == 1)));
};
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