function post(URI, param) {
	var myForm = document.createElement("form");
	myForm.method="post" ;
	myForm.action = URI;
	for (var k in param) {
		var myInput = document.createElement("input") ;
		myInput.setAttribute("name", k) ;
		myInput.setAttribute("value", param[k]);
		myForm.appendChild(myInput) ;
	}
	document.body.appendChild(myForm) ;
	myForm.submit() ;
	document.body.removeChild(myForm) ;
}