var utils=function(){function toArray(a){var c,b=[];if(isHighVersion)b=[].slice.call(a);else for(c=0;c<a.length;c++)b[b.length]=a[c];return b}function toJSON(str){return"JSON"in window?JSON.parse(str):eval("("+str+")")}function getCss(a,b){var d,c=null;return isHighVersion?c=window.getComputedStyle(a,null)[b]:"opacity"===b.toLowerCase()?(c=a.currentStyle["filter"],reg=/^alpha\(opacity=(.+)\)$/i,c=reg.test(c)?reg.exec(c)[1]/100:1):c=a.currentStyle[b],d=parseFloat(c),c=isNaN(d)?c:d}function setCss(a,b,c){if("opacity"===b.toLowerCase())return a.style.opacity=c,a.style.filter="alpha(opacity="+100*c+")",void 0;var d=/^(zIndex|fontWeight)$/i;isNaN(c)||d.test(b)||(c+="px"),a["style"][b]=c}function setGroupCss(a,b){if("[object Object]"===Object.prototype.toString.call(b))for(var c in b)b.hasOwnProperty(c)&&setCss(a,c,b[c])}function css(){var a=arguments,b=a.length,c=getCss;return b>=3&&(c=setCss),2===b&&"object"==typeof a[1]&&(c=setGroupCss),c.apply(null,a)}function offset(a){for(var b=a.offsetLeft,c=a.offsetTop,d=a.offsetParent;d&&d!==document.body;)/MSIE 8/i.test(navigator.userAgent)||(b+=d.clientLeft,c+=d.clientTop),b+=d.offsetLeft,c+=d.offsetTop,d=d.offsetParent;return{left:b,top:c}}function win(a,b){return"undefined"!=typeof b?(document.documentElement[a]=b,document.body[a]=b,void 0):document.documentElement[a]||document.body[a]}function prev(a){if(isHighVersion)return a.previousElementSibling;for(var b=a.previousSibling;b&&1!==b.nodeType;)b=b.previousSibling;return b}function next(a){if(isHighVersion)return a.nextElementSibling;for(var b=a.nextSibling;b&&1!==b.nodeType;)b=b.nextSibling;return b}function prevAll(a){for(var b=[],c=a.previousSibling;c;)1===c.nodeType&&b.unshift(c),c=c.previousSibling;return b}function nextAll(a){for(var b=[],c=a.nextSibling;c;)1===c.nodeType&&b.push(c),c=c.nextSibling;return b}function siblings(a){return prevAll(a).concat(nextAll(a))}function index(a){return prevAll(a).length}function firstChild(a){if(isHighVersion)return a.firstElementChild;for(var b=a.firstChild;b&&1!==b.nodeType;)b=b.nextSibling;return b}function lastChild(a){if(isHighVersion)return a.lastElementChild;for(var b=a.lastChild;b&&1!==b.nodeType;)b=b.previousSibling;return b}function children(a,b){var e,f,c=[],d=a.childNodes;for(e=0;e<d.length;e++)if(f=d[e],1===f.nodeType){if("undefined"!=typeof b){f.tagName.toUpperCase()===b.toUpperCase()?c.push(f):null;continue}c.push(f)}return c}function byClass(a,b){var c,d,e,f,g,h,i,j;if(b=b||document,isHighVersion)return[].slice.call(b.getElementsByClassName(a));for(a=a.replace(/^\s+|\s+$/g,"").split(/\s+/g),c=b.getElementsByTagName("*"),d=[],e=0;e<c.length;e++){for(f=c[e],g=f.className,h=!0,i=0;i<a.length;i++)if(j=new RegExp("(^| +)"+a[i]+"( +|$)"),!j.test(g)){h=!1;break}h?d.push(f):null}return d}function hasClass(a,b){var c,d,e,f,g;for(b=b.replace(/^\s+|\s+$/g,"").split(/\s+/g),c=!0,d=a.className,e=0;e<b.length;e++)if(f=b[e],g=new RegExp("(^| +)"+f+"( +|$)"),!g.test(d)){c=!1;break}return c}function addClass(a,b){var c,d;for(b=b.replace(/^\s+|\s+$/g,"").split(/\s+/g),c=0;c<b.length;c++)d=b[c],hasClass(a,d)||(a.className+=" "+d);a.className=a.className.replace(/^\s+|\s+$/g,"").replace(/\s+/g," ")}function removeClass(a,b){var c,d,e,f;for(b=b.replace(/^\s+|\s+$/g,"").split(/\s+/g),c=a.className.replace(/\s+/g,"  "),d=0;d<b.length;d++)e=b[d],f=new RegExp("(^| )"+e+"( |$)","g"),f.test(c)?c=c.replace(f," "):null;a.className=c.replace(/^\s+|\s+$/g,"").replace(/\s+/g," ")}function append(a,b){b.appendChild(a)}function prepend(a,b){var c=firstChild(b);c?b.insertBefore(a,c):b.appendChild(a)}function insertBefore(a,b){b.parentNode.insertBefore(a,b)}function insertAfter(a,b){var c=next(b),d=b.parentNode;c?d.insertBefore(a,c):d.appendChild(a)}var isHighVersion="getComputedStyle"in window;return{toArray:toArray,toJSON:toJSON,css:css,offset:offset,win:win,prev:prev,next:next,prevAll:prevAll,nextAll:nextAll,siblings:siblings,index:index,firstChild:firstChild,lastChild:lastChild,children:children,byClass:byClass,hasClass:hasClass,addClass:addClass,removeClass:removeClass,append:append,prepend:prepend,insertBefore:insertBefore,insertAfter:insertAfter}}();