<!--
  function changeBg(sID, sImg) {
	newImage = "url(images/" + sImg + ".jpg)";
	document.getElementById(sID).style.backgroundImage = newImage;
  }
  
  function resetBg(sID, sImg) {
  	if (document.getElementById(sID).value == '') {
		newImage = "url(images/" + sID + ".jpg)";
		document.getElementById(sID).style.backgroundImage = newImage;
	} else {
		newImage = "url(images/" + sImg + ".jpg)";
		document.getElementById(sID).style.backgroundImage = newImage;
	}
  }
  
window.onfocus = function() {
	resetBg('header_input_user', 'header_input');
	resetBg('header_input_password', 'header_input');
}
//-->