function Querystring(G){this.params={};if(G==null){G=location.search.substring(1,location.search.length)}if(G.length==0){return }G=G.replace(/\+/g," ");var K=G.split("&");for(var J=0;J<K.length;J++){var H=K[J].split("=");var L=decodeURIComponent(H[0]);var I=(H.length==2)?decodeURIComponent(H[1]):L;this.params[L]=I}}Querystring.prototype.get=function(D,F){var E=this.params[D];return(E!=null)?E:F};Querystring.prototype.contains=function(C){var D=this.params[C];return(D!=null)};