function getPasswordField(obj) {
	var newField=changeInputType(obj,'password');
	newField.focus();
}

function changeInputType(oldObject, oType) {
	var newObject = document.createElement('input');
	newObject.type = oType;
	if(oldObject.size) newObject.size = oldObject.size;
	if(oldObject.maxLength) newObject.maxLength = oldObject.maxLength;
	if(oldObject.value) newObject.value = '';
	if(oldObject.name) newObject.name = oldObject.name;
	if(oldObject.id) newObject.id = oldObject.id;
	if(oldObject.className) newObject.className = oldObject.className;
	oldObject.parentNode.replaceChild(newObject,oldObject);
	newObject.focus();
	return newObject;
}