/* Author: Cezary Tomczak [www.gosu.pl] */if(!Array.prototype.pop){Array.prototype.pop=function(){var last;if(this.length){last=this[this.length-1];this.length-=1;}return last;};}if(!Array.prototype.push){Array.prototype.push=function(){for (var i=0;i<arguments.length;++i){this[this.length]=arguments[i];}return this.length;};}if(!Array.prototype.shift){Array.prototype.shift=function(){var first;if(this.length){first=this[0];for (var i=0;i<this.length-1;++i){this[i]=this[i+1];};this.length-=1;}return first;};}if(!Array.prototype.unshift){Array.prototype.unshift=function(){if(arguments.length){var i,len=arguments.length;for (i=this.length+len-1;i>=len;--i){this[i]=this[i-len];}for (i=0;i<len;++i){this[i]=arguments[i];}}return this.length;};}if(!Array.prototype.splice){Array.prototype.splice=function(index,howMany){var elements=[],removed=[],i;for (i=2;i<arguments.length;++i){elements.push(arguments[i]);}for (i=index;(i<index+howMany) && (i<this.length);++i){removed.push(this[i]);}for (i=index+howMany;i<this.length;++i){this[i-howMany]=this[i];};this.length-=removed.length;for (i=this.length+elements.length-1;i>=index+elements.length;--i){this[i]=this[i-elements.length];}for (i=0;i<elements.length;++i){this[index+i]=elements[i];}return removed;};}