(function(){"use strict";if("undefined"==typeof sigma)throw"sigma is not declared";sigma.utils.pkg("sigma.parsers"),sigma.utils.pkg("sigma.utils"),sigma.utils.xhr=function(){if(window.XMLHttpRequest)return new XMLHttpRequest;var a,b;if(window.ActiveXObject){a=["Msxml2.XMLHTTP.6.0","Msxml2.XMLHTTP.3.0","Msxml2.XMLHTTP","Microsoft.XMLHTTP"];for(b in a)try{return new ActiveXObject(a[b])}catch(c){}}return null},sigma.parsers.json=function(a,b,c){var d,e=sigma.utils.xhr();if(!e)throw"XMLHttpRequest not supported, cannot load the file.";e.open("GET",a,!0),e.onreadystatechange=function(){4===e.readyState&&(d=JSON.parse(e.responseText),b instanceof sigma?(b.graph.clear(),b.graph.read(d)):"object"==typeof b?(b.graph=d,b=new sigma(b)):"function"==typeof b&&(c=b,b=null),c&&c(b||d))},e.send()}}).call(this);