function setReceiver() {
    var selOption = document.formContact.receiver.selectedIndex;
    if (selOption == 0) {
      document.getElementById('rec2').value = "";
    }
    if (selOption == 1) {
      document.getElementById('rec2').value = "";
    }
    if (selOption == 2) {
      document.getElementById('rec2').value = "";
    }
    if (selOption == 3) {
      document.getElementById('rec2').value = "";
    }
  }

  function changeButton(img,imgName){
    document.getElementById(imgName).src = img;
  }

  
function clearInput(p_field){
   	p_field.value = '';
}

function leaveInput(p_field, p_value){
    if(p_field.value == ''){
      p_field.value = p_value;
    }
}