function startEditingTextField( textField, defaultContent ) {
	if( textField.value == defaultContent ) {
		textField.value='';
		textField.className='changed_text_field';
	}
}

function doneEditingTextField( textField, defaultContent ) {
	if( textField.value == '' || textField.value == defaultContent ) {
		textField.value=defaultContent;
		textField.className='default_text_field';
	}
}

function valueForKey(e) {
	var key;
	if( window.event )
		key = window.event.keyCode;
	else if( e )
		key = e.which;
	
	return key;
}