Javascript Array remove(toRemove)

Array.prototype.remove=function(toRemove)
{
   var arr = [];//from  w w w  .ja v  a2 s .com
   for (i=0;i<this.length;i++)
    {
     if(this[i] == toRemove)
     {
      this.splice(i, 1);
     }
    }
}

function start(){
 var elements = window.prompt("Enter the length of your array:");
 var someArr = [];
 for (var i = 0 ; i < elements; i++) 
 {
  someArr[i] = window.prompt("Element [" + i + "]:");
 }
 someArr.remove(window.prompt("What do you want to remove:"));
 for (var i = 0 ; i < elements; i++) 
 {
  console.log(someArr[i]);
 }
 alert("Check you console :) .");
}