var cnv,
    ctx,
    loader,
    loaderctx,
    pxy = [],
    shuffle = [4,1,7,8,14,2,5,11,13,3,10,6,9,0,12],
    imgarr = [2,4,3,1,5],
    row = 0,
    col = 0,
    fps = 0,
    pcnt = 0,
    icnt = 0,
    alphaOut = 1,
    swapDelay = 4000,
    grid = 64,
    cnvH = 256,
    isHome = false,
    isFirst = true;

$(document).ready(function () {

//    // Mega Menus
//    function menuHoverOver() {
//        $(this).children('ul').show();
//    }

//    function menuHoverOut() {
//        //alert(1);
//        $(this).children('ul').hide();
//    }

    // Mega Menus
    function menuHoverOver() {
        $(this).children('ul').animate({
            opacity: 1,
            height: 'toggle'
        }, 300);
    }

    function menuHoverOut() {
        //alert(1);
        $(this).children('ul').animate({
            opacity: 0,
            height: 'toggle'
        }, 100);
    }

    var config = {
        interval: 100,
        over: menuHoverOver,
        timeout: 100,
        out: menuHoverOut
    };

    //    $("#main ul li .submenu").css({ 'opacity': '0' }); //Fade sub nav to 0 opacity on default
    $("#main ul li").hoverIntent(config);


    // Searchbox placeholder for non HTML5 supporting browsers
    $('#searchbox .searchtxt').focus(function () {
        if ($.trim(this.value) == 'Search') this.value = '';
        $(this).addClass('focus');
    }).blur(function () {
        if ($.trim(this.value) == '') {
            this.value = 'Search';
            $(this).removeClass('focus');
        }
    });

    // Search execution
    $('#bSearch').click(function () {
        var q = $.trim($('#tSearch').val());
        if (q.length > 2 && q != 'Search') {
            location.href = '/search.aspx?q=' + encodeURI(q);
        }
        return false;
    });
    $('#tSearch').keypress(function (e) {
        if (e.keyCode == 13) {
            e.preventDefault();
            $('#bSearch').click();
        }
    });

    //animation related
    imgarr.sort(gridRandomize);
    isHome = $('#home-header').length;
    if (isHome) cnvH = 384;
    cnv = $('#sprite')[0];

    if (cnv.getContext && isHome) {
        ctx = cnv.getContext('2d');
        nextImage();
    } else {
        var img = new Image();
        $(img).load(function () {
            $('#mainimage').empty().hide().append(this).fadeIn(2000,
                function () {
                    setTimeout('nextFadeImage()', swapDelay);
                });
        }).attr('src', '/images/header/large' + imgarr[icnt] + '.gif');
    }

    //png fix for older ie
    DD_belatedPNG.fix('#topbarbg, #topbar h1, .signup, #mainimage img, section.rightcol header h2, ul.resourceList li a');
});

// ** start animation functions
function initDraw(){
    ctx.fillStyle = "rgb(245,132,40)";   
    gridDraw();
}

function gridDraw(){ 
    if(col == 0) shuffle.sort(gridRandomize);
    
    if(pxy.length == 4){
        ctx.putImageData(pixelData(pxy[0], pxy[1]), pxy[0], pxy[1]);
        ctx.putImageData(pixelData(pxy[2], pxy[3]), pxy[2], pxy[3]);
    }
    else if(pxy.length) ctx.putImageData(pixelData(pxy[0], pxy[1]), pxy[0], pxy[1]);
    
    if(col < 14){
        ctx.fillRect((shuffle[col] * grid), (row * grid), grid, grid);
        ctx.fillRect((shuffle[col+1] * grid), (row * grid), grid, grid);
        pxy = [(shuffle[col] * grid), (row * grid), (shuffle[col+1] * grid), (row * grid)];
        col+=2;
    }
    else {
        ctx.fillRect ((shuffle[col] * grid), (row * grid), grid, grid);
        pxy = [(shuffle[col] * grid), (row * grid)];
        col++;
    }
    fps+=2;
    if(col > 14){ row++; col=0; }
    if(row < (cnvH/grid)) setTimeout('gridDraw()', (16 + parseInt(fps/3)));
    else { 
        ctx.putImageData(pixelData(pxy[0], pxy[1]), pxy[0], pxy[1]); 
        row = 0; col = 0; fps = 0; pcnt = 0; alphaOut = 10; pxy = [];
        setTimeout('pulse()', 30);
    }
}
function pulse(){
    pcnt++;
    if(pcnt % 2 == 0) ctx.fillStyle = "rgb(248,244,237)";
    else ctx.fillStyle = "rgb(245,132,40)";
    
    ctx.fillRect(0, (cnvH - grid), grid-1, grid-1);
    if(pcnt < 6) setTimeout('pulse()', (150 + pcnt * 15));
    else setTimeout('fadeOut()', (150 + pcnt * 15));
} 
function fadeOut(){    
    ctx.fillStyle = "rgb(248,244,237)";
    ctx.fillRect(0, (cnvH - grid), grid-1, grid-1);
    ctx.fillStyle = "rgba(245,132,40, " + alphaOut/10 + ")";
    ctx.fillRect(0, (cnvH - grid), grid-1, grid-1);
    alphaOut -= 1;
    
    if(alphaOut == 0){
        ctx.putImageData(pixelData(0, (cnvH - grid)), 0, (cnvH - grid));        
        setTimeout('nextImage()', swapDelay);
    }
    else setTimeout('fadeOut()', 40);
} 
function pixelData(x,y){
    var idata = loaderctx.getImageData(x,y,grid,grid);
    return idata;
}
function nextImage(){
    icnt++;
    if(icnt > 4) icnt = 0;
        
    var imgX = new Image();
    $(imgX).load(function(){  
        loader = $('#loader')[0];
        
        if(isFirst){
            isFirst = false;
            $('#blink').fadeIn(400)
            .fadeOut(200)
            .fadeIn(400)
            .fadeOut(200)
            .fadeIn(400)
            .fadeOut(200, function(){
                if (loader.getContext){  
                    loaderctx = loader.getContext('2d');  
                    loaderctx.drawImage(imgX,0,0); 
                    setTimeout('initDraw()', 50);
                }
            });
        }
        else{          
            if (loader.getContext){  
                loaderctx = loader.getContext('2d');  
                loaderctx.drawImage(imgX,0,0); 
                setTimeout('initDraw()', 50);
            }
        }
        
    }).attr('src', '/images/header/large' + imgarr[icnt] + '.gif');
} 
function nextFadeImage(){
    icnt++;
    if(icnt > 4) icnt = 0;
        
    var imgX = new Image();
    $(imgX).load(function(){  
        $('#mainimage').fadeOut(800, function(){
            $('#mainimage').empty().hide().append(imgX).fadeIn(2500, 
                function(){ setTimeout('nextFadeImage()', swapDelay); 
            });
        });        
    }).attr('src', '/images/header/large' + imgarr[icnt] + '.gif');
}
function gridRandomize(){
    return (Math.round(Math.random())-0.5);
}

function gridRandomize(){
    return (Math.round(Math.random())-0.5);
}
// ** end animation functions

function historyBack() {
    history.back();
}

// ** easing plugins
jQuery.easing['jswing'] = jQuery.easing['swing'];

jQuery.extend( jQuery.easing,
{
  def: 'easeOutQuad',
  swing: function (x, t, b, c, d) {
    //alert(jQuery.easing.default);
    return jQuery.easing[jQuery.easing.def](x, t, b, c, d);
  },
  easeInQuad: function (x, t, b, c, d) {
    return c*(t/=d)*t + b;
  },
  easeOutQuad: function (x, t, b, c, d) {
    return -c *(t/=d)*(t-2) + b;
  },
  easeInOutQuad: function (x, t, b, c, d) {
    if ((t/=d/2) < 1) return c/2*t*t + b;
    return -c/2 * ((--t)*(t-2) - 1) + b;
  },
  easeInCubic: function (x, t, b, c, d) {
    return c*(t/=d)*t*t + b;
  },
  easeOutCubic: function (x, t, b, c, d) {
    return c*((t=t/d-1)*t*t + 1) + b;
  },
  easeInOutCubic: function (x, t, b, c, d) {
    if ((t/=d/2) < 1) return c/2*t*t*t + b;
    return c/2*((t-=2)*t*t + 2) + b;
  },
  easeInQuart: function (x, t, b, c, d) {
    return c*(t/=d)*t*t*t + b;
  },
  easeOutQuart: function (x, t, b, c, d) {
    return -c * ((t=t/d-1)*t*t*t - 1) + b;
  },
  easeInOutQuart: function (x, t, b, c, d) {
    if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
    return -c/2 * ((t-=2)*t*t*t - 2) + b;
  },
  easeInQuint: function (x, t, b, c, d) {
    return c*(t/=d)*t*t*t*t + b;
  },
  easeOutQuint: function (x, t, b, c, d) {
    return c*((t=t/d-1)*t*t*t*t + 1) + b;
  },
  easeInOutQuint: function (x, t, b, c, d) {
    if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
    return c/2*((t-=2)*t*t*t*t + 2) + b;
  },
  easeInSine: function (x, t, b, c, d) {
    return -c * Math.cos(t/d * (Math.PI/2)) + c + b;
  },
  easeOutSine: function (x, t, b, c, d) {
    return c * Math.sin(t/d * (Math.PI/2)) + b;
  },
  easeInOutSine: function (x, t, b, c, d) {
    return -c/2 * (Math.cos(Math.PI*t/d) - 1) + b;
  },
  easeInExpo: function (x, t, b, c, d) {
    return (t==0) ? b : c * Math.pow(2, 10 * (t/d - 1)) + b;
  },
  easeOutExpo: function (x, t, b, c, d) {
    return (t==d) ? b+c : c * (-Math.pow(2, -10 * t/d) + 1) + b;
  },
  easeInOutExpo: function (x, t, b, c, d) {
    if (t==0) return b;
    if (t==d) return b+c;
    if ((t/=d/2) < 1) return c/2 * Math.pow(2, 10 * (t - 1)) + b;
    return c/2 * (-Math.pow(2, -10 * --t) + 2) + b;
  },
  easeInCirc: function (x, t, b, c, d) {
    return -c * (Math.sqrt(1 - (t/=d)*t) - 1) + b;
  },
  easeOutCirc: function (x, t, b, c, d) {
    return c * Math.sqrt(1 - (t=t/d-1)*t) + b;
  },
  easeInOutCirc: function (x, t, b, c, d) {
    if ((t/=d/2) < 1) return -c/2 * (Math.sqrt(1 - t*t) - 1) + b;
    return c/2 * (Math.sqrt(1 - (t-=2)*t) + 1) + b;
  },
  easeInElastic: function (x, t, b, c, d) {
    var s=1.70158;var p=0;var a=c;
    if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
    if (a < Math.abs(c)) { a=c; var s=p/4; }
    else var s = p/(2*Math.PI) * Math.asin (c/a);
    return -(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
  },
  easeOutElastic: function (x, t, b, c, d) {
    var s=1.70158;var p=0;var a=c;
    if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
    if (a < Math.abs(c)) { a=c; var s=p/4; }
    else var s = p/(2*Math.PI) * Math.asin (c/a);
    return a*Math.pow(2,-10*t) * Math.sin( (t*d-s)*(2*Math.PI)/p ) + c + b;
  },
  easeInOutElastic: function (x, t, b, c, d) {
    var s=1.70158;var p=0;var a=c;
    if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
    if (a < Math.abs(c)) { a=c; var s=p/4; }
    else var s = p/(2*Math.PI) * Math.asin (c/a);
    if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
    return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
  },
  easeInBack: function (x, t, b, c, d, s) {
    if (s == undefined) s = 1.70158;
    return c*(t/=d)*t*((s+1)*t - s) + b;
  },
  easeOutBack: function (x, t, b, c, d, s) {
    if (s == undefined) s = 1.70158;
    return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
  },
  easeInOutBack: function (x, t, b, c, d, s) {
    if (s == undefined) s = 1.70158; 
    if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
    return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
  },
  easeInBounce: function (x, t, b, c, d) {
    return c - jQuery.easing.easeOutBounce (x, d-t, 0, c, d) + b;
  },
  easeOutBounce: function (x, t, b, c, d) {
    if ((t/=d) < (1/2.75)) {
      return c*(7.5625*t*t) + b;
    } else if (t < (2/2.75)) {
      return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
    } else if (t < (2.5/2.75)) {
      return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
    } else {
      return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
    }
  },
  easeInOutBounce: function (x, t, b, c, d) {
    if (t < d/2) return jQuery.easing.easeInBounce (x, t*2, 0, c, d) * .5 + b;
    return jQuery.easing.easeOutBounce (x, t*2-d, 0, c, d) * .5 + c*.5 + b;
  }
});