var arrInput = new Array(0);
  var arrInputValue = new Array(0);

function adicionaFile() {
  arrInput.push(arrInput.length);
  arrInputValue.push("");
  display();
}

function display() {
  document.getElementById('parah').innerHTML="";
  if (arrInput.length == 5) {
	alert ("Numero máximo de campos é 5");
	arrInput.length = 4;
	for (intI=0;intI<arrInput.length;intI++) {
		document.getElementById('parah').innerHTML+=createInput(arrInput[intI], arrInputValue[intI]);
	}
  } else {
	for (intI=0;intI<arrInput.length;intI++) {
		document.getElementById('parah').innerHTML+=createInput(arrInput[intI], arrInputValue[intI]);
	}
  }
}

function saveValue(intId,strValue) {
  arrInputValue[intId]=strValue;
}  

function createInput(id,value) {
  return "<input class='extras' type='file' name='file[]' id='file[]' onChange='javascript:saveValue("+ id +",this.value)' value='"+ value +"'>";
}

function removeFile() {
  if (arrInput.length > 0) { 
     arrInput.pop(); 
     arrInputValue.pop();
  }
  display(); 
}