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