Top Most Submit a Java Script Form with its enclosed input elements on the Fly with Post method

var url =  document.getElementById('action').value;
url = url  +"/" +searchType;

var myform=document.createElement('form');
myform.method='POST';
myform.action=url;

var searchKeyInput=document.createElement('input');
searchKeyInput.type='hidden';
searchKeyInput.name='searchKey';
searchKeyInput.value=searchKey;
myform.appendChild(searchKeyInput);

var searchTypeInput=document.createElement('input');
searchTypeInput.type='hidden';
searchTypeInput.name='searchType';
searchTypeInput.value=searchType;
myform.appendChild(searchTypeInput);

var myFormDiv = document.getElementById('myFormDiv');
myFormDiv.appendChild(myform);
myform.submit();