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f=c.config.doc,e=c.UA;return(this._env={async:f&&f.createElement("script").async===true,cssLoad:!!(e.gecko?e.gecko>=9:!e.webkit),preservesScriptOrder:!!(e.gecko||e.opera)});},_getTransaction:function(k,g){var l=[],h,e,j,f;if(!b.isArray(k)){k=[k];}for(h=0,e=k.length;h<e;++h){f=k[h];j={attributes:{}};if(typeof f==="string"){j.url=f;}else{if(f.url){c.mix(j,f,false,null,0,true);f=f.url;}else{continue;}}c.mix(j,g,false,null,0,true);c.mix(j,this.options,false,null,0,true);if(!j.type){if(this.REGEX_CSS.test(f)){j.type="css";}else{if(!this.REGEX_JS.test(f)){}j.type="js";}}c.mix(j,j.type==="js"?this.jsOptions:this.cssOptions,false,null,0,true);j.attributes.id||(j.attributes.id=c.guid());if(j.win){j.doc=j.win.document;}else{j.win=j.doc.defaultView||j.doc.parentWindow;}if(j.charset){j.attributes.charset=j.charset;}l.push(j);}return new a(l,g);},_load:function(f,g,e,i){var h;if(typeof e==="function"){i=e;e={};}e||(e={});e.type=f;if(!this._env){this._getEnv();}h=this._getTransaction(g,e);this._queue.push({callback:i,transaction:h});this._next();return h;},_next:function(){var e;if(this._pending){return;}e=this._queue.shift();if(e){this._pending=e;e.transaction.execute(function(){e.callback&&e.callback.apply(this,arguments);d._pending=null;d._next();});}},_purge:function(e){var g=this._purgeNodes,i=e!==g,f,h;while(h=e.pop()){h.parentNode&&h.parentNode.removeChild(h);if(i){f=c.Array.indexOf(g,h);if(f>-1){g.splice(f,1);}}}}};d.script=d.js;d.Transaction=a=function(g,f){var 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