function toggleDisplayStyle(id) {
	if (document.getElementById(id).style.display != 'block') 
		document.getElementById(id).style.display='block';
	else 
		document.getElementById(id).style.display='none';
}

function onError(form_object, input_object, object_value, error_message) {
	alert(error_message);
	return false;	
}

function hasValue(obj, obj_type) {
    if (obj_type == "TEXT" || obj_type == "PASSWORD") {
    	if (obj.value.length == 0) 
      		return false;
    	else 
      		return true;
	}
}
function toggleImg(id) { toggleDisplayStyle(id); }