text: //fgnass.github.com/spin.js#v1.3.1
  
  /**
   * Copyright (c) 2011-2013 Felix Gnass
   * Licensed under the MIT license
   */
  !function(a,b){"object"==typeof exports?module.exports=b():"function"==typeof define&&define.amd?define(b):a.Spinner=b()}(this,function(){"use strict";function a(a,b){var c,d=document.createElement(a||"div");for(c in b)d[c]=b[c];return d}function b(a){for(var b=1,c=arguments.length;c>b;b++)a.appendChild(arguments[b]);return a}function c(a,b,c,d){var e=["opacity",b,~~(100*a),c,d].join("-"),f=.01+100*(c/d),g=Math.max(1-(1-a)/b*(100-f),a),h=k.substring(0,k.indexOf("Animation")).toLowerCase(),i=h&&"-"+h+"-"||"";return m[e]||(n.insertRule("@"+i+"keyframes "+e+"{"+"0%{opacity:"+g+"}"+f+"%{opacity:"+a+"}"+(f+.01)+"%{opacity:1}"+(f+b)%100+"%{opacity:"+a+"}"+"100%{opacity:"+g+"}"+"}",n.cssRules.length),m[e]=1),e}function d(a,b){var c,d,e=a.style;if(void 0!==e[b])return b;for(b=b.charAt(0).toUpperCase()+b.slice(1),d=0;d<l.length;d++)if(c=l[d]+b,void 0!==e[c])return c}function e(a,b){for(var c in b)a.style[d(a,c)||c]=b[c];return a}function f(a){for(var b=1;b<arguments.length;b++){var c=arguments[b];for(var d in c)void 0===a[d]&&(a[d]=c[d])}return a}function g(a){for(var b={x:a.offsetLeft,y:a.offsetTop};a=a.offsetParent;)b.x+=a.offsetLeft,b.y+=a.offsetTop;return b}function h(a,b){return"string"==typeof a?a:a[b%a.length]}function i(a){return"undefined"==typeof this?new i(a):(this.opts=f(a||{},i.defaults,o),void 0)}function j(){function c(b,c){return a("<"+b+' xmlns="urn:schemas-microsoft.com:vml" class="spin-vml">',c)}n.addRule(".spin-vml","behavior:url(#default#VML)"),i.prototype.lines=function(a,d){function f(){return e(c("group",{coordsize:k+" "+k,coordorigin:-j+" "+-j}),{width:k,height:k})}function g(a,g,i){b(m,b(e(f(),{rotation:360/d.lines*a+"deg",left:~~g}),b(e(c("roundrect",{arcsize:d.corners}),{width:j,height:d.width,left:d.radius,top:-d.width>>1,filter:i}),c("fill",{color:h(d.color,a),opacity:d.opacity}),c("stroke",{opacity:0}))))}var i,j=d.length+d.width,k=2*j,l=2*-(d.width+d.length)+"px",m=e(f(),{position:"absolute",top:l,left:l});if(d.shadow)for(i=1;i<=d.lines;i++)g(i,-2,"progid:DXImageTransform.Microsoft.Blur(pixelradius=2,makeshadow=1,shadowopacity=.3)");for(i=1;i<=d.lines;i++)g(i);return b(a,m)},i.prototype.opacity=function(a,b,c,d){var e=a.firstChild;d=d.shadow&&d.lines||0,e&&b+d<e.childNodes.length&&(e=e.childNodes[b+d],e=e&&e.firstChild,e=e&&e.firstChild,e&&(e.opacity=c))}}var k,l=["webkit","Moz","ms","O"],m={},n=function(){var c=a("style",{type:"text/css"});return b(document.getElementsByTagName("head")[0],c),c.sheet||c.styleSheet}(),o={lines:12,length:7,width:5,radius:10,rotate:0,corners:1,color:"#000",direction:1,speed:1,trail:100,opacity:.25,fps:20,zIndex:2e9,className:"spinner",top:"auto",left:"auto",position:"relative"};i.defaults={},f(i.prototype,{spin:function(b){this.stop();var c,d,f=this,h=f.opts,i=f.el=e(a(0,{className:h.className}),{position:h.position,width:0,zIndex:h.zIndex}),j=h.radius+h.length+h.width;if(b&&(b.insertBefore(i,b.firstChild||null),d=g(b),c=g(i),e(i,{left:("auto"==h.left?d.x-c.x+(b.offsetWidth>>1):parseInt(h.left,10)+j)+"px",top:("auto"==h.top?d.y-c.y+(b.offsetHeight>>1):parseInt(h.top,10)+j)+"px"})),i.setAttribute("role","progressbar"),f.lines(i,f.opts),!k){var l,m=0,n=(h.lines-1)*(1-h.direction)/2,o=h.fps,p=o/h.speed,q=(1-h.opacity)/(p*h.trail/100),r=p/h.lines;!function s(){m++;for(var a=0;a<h.lines;a++)l=Math.max(1-(m+(h.lines-a)*r)%p*q,h.opacity),f.opacity(i,a*h.direction+n,l,h);f.timeout=f.el&&setTimeout(s,~~(1e3/o))}()}return f},stop:function(){var a=this.el;return a&&(clearTimeout(this.timeout),a.parentNode&&a.parentNode.removeChild(a),this.el=void 0),this},lines:function(d,f){function g(b,c){return e(a(),{position:"absolute",width:f.length+f.width+"px",height:f.width+"px",background:b,boxShadow:c,transformOrigin:"left",transform:"rotate("+~~(360/f.lines*j+f.rotate)+"deg) translate("+f.radius+"px"+",0)",borderRadius:(f.corners*f.width>>1)+"px"})}for(var i,j=0,l=(f.lines-1)*(1-f.direction)/2;j<f.lines;j++)i=e(a(),{position:"absolute",top:1+~(f.width/2)+"px",transform:f.hwaccel?"translate3d(0,0,0)":"",opacity:f.opacity,animation:k&&c(f.opacity,f.trail,l+j*f.direction,f.lines)+" "+1/f.speed+"s linear infinite"}),f.shadow&&b(i,e(g("#000","0 0 4px #000"),{top:"2px"})),b(d,b(i,g(h(f.color,j),"0 0 1px rgba(0,0,0,.1)")));return d},opacity:function(a,b,c){b<a.childNodes.length&&(a.childNodes[b].style.opacity=c)}});var p=e(a("group"),{behavior:"url(#default#VML)"});return!d(p,"transform")&&p.adj?j():k=d(p,"animation"),i}),function(a){if("object"==typeof exports)a(require("jquery"),require("spin"));else if("function"==typeof define&&define.amd)define(["jquery","spin"],a);else{if(!window.Spinner)throw new Error("Spin.js not present");a(window.jQuery,window.Spinner)}}(function(a,b){a.fn.spin=function(c,d){return this.each(function(){var e=a(this),f=e.data();f.spinner&&(f.spinner.stop(),delete f.spinner),c!==!1&&(c=a.extend({color:d||e.css("color")},a.fn.spin.presets[c]||c),f.spinner=new b(c).spin(this))})},a.fn.spin.presets={tiny:{lines:8,length:2,width:2,radius:3},small:{lines:8,length:4,width:3,radius:5},large:{lines:10,length:8,width:4,radius:8}}});
  