Array.prototype.opush = function(){
  

  //alert(this.concat(Array.prototype.slice.apply(arguments)));
  

  this.splice.apply(
  

  this,
  

  [this.length,0].
  

  concat(Array.prototype.slice.apply(arguments)));
  

  return this.length;
  

  };
  

  var a = [1,2,3,4,5];
  

  var b = [23,45,67];
  

  alert(a.opush(b));
  

  alert(a);