if(!Array.prototype.pop){Array.prototype.pop=function(){var a;if(this.length){a=this[this.length-1];this.length-=1}return a}}if(!Array.prototype.push){Array.prototype.push=function(){for(var a=0;a<arguments.length;++a){this[this.length]=arguments[a]}return this.length}}if(!Array.prototype.shift){Array.prototype.shift=function(){var b;if(this.length){b=this[0];for(var a=0;a<this.length-1;++a){this[a]=this[a+1]}this.length-=1}return b}}if(!Array.prototype.unshift){Array.prototype.unshift=function(){if(arguments.length){var b,a=arguments.length;for(b=this.length+a-1;b>=a;--b){this[b]=this[b-a]}for(b=0;b<a;++b){this[b]=arguments[b]}}return this.length}}if(!Array.prototype.splice){Array.prototype.splice=function(a,c){var d=[],e=[],b;for(b=2;b<arguments.length;++b){d.push(arguments[b])}for(b=a;(b<a+c)&&(b<this.length);++b){e.push(this[b])}for(b=a+c;b<this.length;++b){this[b-c]=this[b]}this.length-=e.length;for(b=this.length+d.length-1;b>=a+d.length;--b){this[b]=this[b-d.length]}for(b=0;b<d.length;++b){this[a+b]=d[b]}return e}};