var Slider = Class.create();
Slider.prototype = {
    options: {
        shift: 900
    },
    
    initialize: function(container, controlLeft, controlRight){
        this.animating = false;
        this.containerSize = {
            width: $(container).offsetWidth,
            height: $(container).offsetHeight
        },
        this.content = $(container).down();
        this.controlLeft = $(controlLeft);
        this.controlRight = $(controlRight);
        
        this.initControls();
    },
    
    initControls: function(){
        this.controlLeft.href = this.controlRight.href = 'javascript:void(0)';
        Event.observe(this.controlLeft,  'click', this.shiftLeft.bind(this));
        Event.observe(this.controlRight, 'click', this.shiftRight.bind(this));
        this.updateControls(1, 0);
    },
    
    shiftRight: function(){
        if (this.animating)
            return;
        
        var left = isNaN(parseInt(this.content.style.left)) ? 0 : parseInt(this.content.style.left);
        
        if ((left + this.options.shift) < 0) {
            var shift = this.options.shift;
            this.updateControls(1, 1);
        } else {
            var shift = Math.abs(left);
            this.updateControls(1, 0);
        }
        this.moveTo(shift);
    },
    
    shiftLeft: function(){
        if (this.animating)
            return;
        
        var left = isNaN(parseInt(this.content.style.left)) ? 0 : parseInt(this.content.style.left);
        
        var lastItemLeft = this.content.childElements().last().positionedOffset()[0];
        var lastItemWidth = this.content.childElements().last().getWidth();
        var contentWidth = lastItemLeft + lastItemWidth + 8;
        
        if ((contentWidth + left - this.options.shift) > this.containerSize.width) {
            var shift = this.options.shift;
            this.updateControls(1, 1);
        } else {
            var shift = contentWidth + left - this.containerSize.width;
            this.updateControls(0, 1);
        } 
        this.moveTo(-shift);
    },
    
    moveTo: function(shift){
        var scope = this;
                     
        this.animating = true;
        
        new Effect.Move(this.content, {
            x: shift,
            duration: 0.4,
            delay: 0,
            afterFinish: function(){
                scope.animating = false;
            }
        });
    },
    
    updateControls: function(left, right){
        if (!left)
            this.controlLeft.addClassName('disabled');
        else
            this.controlLeft.removeClassName('disabled');
        
        if (!right)
            this.controlRight.addClassName('disabled');
        else
            this.controlRight.removeClassName('disabled');
    }
}


jQuery(document).ready(function(){
				//To switch directions up/down and left/right just place a "-" in front of the top/left attribute
				//Vertical Sliding
				jQuery('.boxgrid.slidedown').hover(function(){
					jQuery(".cover", this).stop().animate({top:'-260px'},{queue:false,duration:300});
				}, function() {
					jQuery(".cover", this).stop().animate({top:'0px'},{queue:false,duration:300});
				});
				//Horizontal Sliding
				jQuery('.boxgrid.slideright').hover(function(){
					jQuery(".cover", this).stop().animate({left:'325px'},{queue:false,duration:300});
				}, function() {
					jQuery(".cover", this).stop().animate({left:'0px'},{queue:false,duration:300});
				});
				//Diagnal Sliding
				jQuery('.boxgrid.thecombo').hover(function(){
					jQuery(".cover", this).stop().animate({top:'260px', left:'325px'},{queue:false,duration:300});
				}, function() {
					jQuery(".cover", this).stop().animate({top:'0px', left:'0px'},{queue:false,duration:300});
				});
				//Partial Sliding (Only show some of background)
				jQuery('.boxgrid.peek').hover(function(){
					jQuery(".cover", this).stop().animate({top:'90px'},{queue:false,duration:160});
				}, function() {
					jQuery(".cover", this).stop().animate({top:'0px'},{queue:false,duration:160});
				});
				//Full Caption Sliding (Hidden to Visible)
				jQuery('.boxgrid.captionfull').hover(function(){
					jQuery(".cover", this).stop().animate({top:'120px'},{queue:false,duration:160});
				}, function() {
					jQuery(".cover", this).stop().animate({top:'220px'},{queue:false,duration:160});
				});
				//Caption Sliding (Partially Hidden to Visible)
				jQuery('.boxgrid.caption').hover(function(){
					jQuery(".cover", this).stop().animate({top:'0px'},{queue:false,duration:160});
				}, function() {
					jQuery(".cover", this).stop().animate({top:'200px'},{queue:false,duration:160});
				});
			});