jquery.dim-background.min.js

!function(a){"use strict";function b(a,b){return"function"==typeof a&&(b=a,a={}),"object"!=typeof a&&(a={}),"function"!=typeof b&&(b=function(){}),{options:a,callback:b}}var c=[];a.fn.dimBackground=function(d,e){var f=b(d,e);d=f.options,e=f.callback,d=a.extend({},a.fn.dimBackground.defaults,d);var g=a('<div class="dimbackground-curtain"></div>');return g.css({position:"fixed",left:0,top:0,width:"100%",height:"100%",background:"black",opacity:0,zIndex:d.curtainZIndex}),a("body").append(g),this.each(function(){var b=a(this),c=a.meta?a.extend({},d,b.data()):d;this._$curtain=g,this._originalPosition=b.css("position").toLowerCase(),"absolute"!=this._originalPosition&&"fixed"!=this._originalPosition&&b.css("position","relative"),this._originalZIndex=b.css("z-index"),("auto"==this._originalZIndex||this._originalZIndex<=c.curtainZIndex)&&b.css("z-index",c.curtainZIndex+1)}),g.stop().animate({opacity:d.darkness},d.fadeInDuration,e),c.push({$curtain:g,$nodes:this}),this},a.fn.undim=function(d,e){var f=b(d,e);d=f.options,e=f.callback,d=a.extend({},a.fn.dimBackground.defaults,d);var g,h=[];if(this.each(function(){{var b=a(this);a.meta?a.extend({},d,b.data()):d}this._$curtain&&(g||(g=this._$curtain),"undefined"!=typeof this._originalPosition&&h.push([this,this._originalPosition,this._originalZIndex]),this._$curtain=void 0,this._originalPosition=void 0,this._originalZIndex=void 0)}),g){g.animate({opacity:0},d.fadeOutDuration,function(){for(var b=0;b<h.length;b++){var c=h[b][0],d=h[b][1],f=h[b][2];a(c).css({position:d,zIndex:f})}g.remove(),e()});for(var i,j=0;j<c.length;j++){var k=c[j];if(k.$curtain==g){i=j;break}}i&&(c=c.slice(0,j).concat(c.slice(j+1)))}return this},a.undim=function(d,e){function f(){i++,i==j&&e()}var g=b(d,e);d=g.options,e=g.callback,d=a.extend({},a.fn.dimBackground.defaults,d);for(var h=c.slice(),i=0,j=h.length,k=0;k<c.length;k++)h[k].$nodes.undim(d,f);0===j&&e()},a.fn.dimBackground.defaults={darkness:.75,fadeInDuration:300,fadeOutDuration:300,curtainZIndex:999}}(jQuery);