Array.prototype.add=add;Array.prototype.remove=remove;function add(element){len=this.length;this[len]=element;}function remove(idx){var temp=new Array();var j=0;for(i=0;i<idx;i++){temp[j++]=this[i];}for(i=idx+1;i<this.length;i++){temp[j++]=this[i];}this.length=0;for(i=0;i<temp.length;i++){this[i]=temp[i];}}