/*
 * onProximityFade jQuery Plugin v1.0.0
 * http://jquery.com/
 *
 * Copyright 2010, Jakub Linowski
 * Licensed under the MIT license
 * http://www.linowski.ca
 *
 * Date: July 25 2010
 */

//Default Settings
var opf = {
    farOpacity : 0.1,
    farDistanceMax : 200,
    closeOpacity : 1,
    closeDistanceMin : 10,
    className : "fadeBox", 
    hover : null
};

$(document).ready(function(){
    if (!$.browser.msie){
        //setup default opacity on
        $("." + opf.className).each(function() {
            $(this).fadeTo(1,opf.farOpacity);
            // for links
            if($(this).get(0).tagName == "A")
            {
                //set all items as block (so that IE can pick up a width)
                $(this).css("display","inline-block");
                //set a background color so that FireFox & ClearType can better calculate an opacity colour
                $(this).css("background-color","inherit");
            }
        });
	
	
        //attach hovers
        $("." + opf.className).hover(
            function() {
                opf.hover = this;
            },
            function() {
                opf.hover = null;
            }
            );
    }
});

$(document).mousemove(function(e){
    if (!$.browser.msie){
        //adjust opacity foreach element based on className
        if(opf.hover == null) {
            $("." + opf.className).each(function() {
                //highlight the elements in the beginning to show they are there
			
                //grab the element's boundary points
                var boundary = new Object();
                boundary.topY = $(this).offset().top;
                boundary.bottomY = boundary.topY + $(this).height();
                boundary.leftX = $(this).offset().left;
                boundary.rightX = boundary.leftX + $(this).width();
			
                //cursor top left of element
                if ((e.pageX <= boundary.leftX) && (e.pageY <= boundary.topY)) {
                    var distance = Math.sqrt(Math.pow((e.pageX - boundary.leftX), 2) + Math.pow((e.pageY - boundary.topY), 2));
                }
                //cursor top right of element
                else if ((e.pageX >= boundary.rightX) && (e.pageY <= boundary.topY)) {
                    var distance = Math.sqrt(Math.pow((e.pageX - boundary.rightX), 2) + Math.pow((e.pageY - boundary.topY), 2));
                }
                //cursor bottom right of element
                else if ((e.pageX >= boundary.rightX) && (e.pageY >= boundary.bottomY)) {
                    var distance = Math.sqrt(Math.pow((e.pageX - boundary.rightX), 2) + Math.pow((e.pageY - boundary.bottomY), 2));
                }
                //cursor bottom left of element
                else if ((e.pageX <= boundary.leftX) && (e.pageY >= boundary.bottomY)) {
                    var distance = Math.sqrt(Math.pow((e.pageX - boundary.leftX), 2) + Math.pow((e.pageY - boundary.bottomY), 2));
                }
			
                //cursor left of element
                else if (e.pageX < boundary.leftX) {
                    var distance = boundary.leftX - opf.closeDistanceMin - e.pageX;
                }
                //cursor right of element
                else if (e.pageX > boundary.rightX) {
                    var distance = e.pageX - boundary.rightX + opf.closeDistanceMin ;
                }
                //cursor top of element
                else if (e.pageY < boundary.topY) {
                    var distance = boundary.topY - opf.closeDistanceMin - e.pageY;
                }
                //cursor bottom of element
                else if (e.pageY > boundary.bottomY) {
                    var distance = e.pageY - boundary.bottomY + opf.closeDistanceMin;
                }
			
			
                //set the right opacity for the element
                if (distance > opf.farDistanceMax) {
                    distance = opf.farDistanceMax;
                }
                var opacity = opf.closeOpacity - distance / opf.farDistanceMax + opf.farOpacity;
                $(this).stop().css("opacity",opacity);
            //$(this).stop().fadeTo(1,opacity);
            });
        }
        //set right the hover effect
	
        //$(opf.hover).css("border","1px solid #000000");
        //fade out the rest of elements
        if (opf.hover != null) {
            $("." + opf.className).stop().fadeTo(500, opf.farOpacity);
		
        }
    }
  
});