JABA.LOGIN_FIELD = 'login';
JABA.PASS_FIELD = 'password';

JABA.clearInputField = function ( field ) {
	if( /^(text|hidden|textarea|password)$/.test( field.get( 'type' ) ) ){
		field.set( 'value', '' );
	}
}
JABA.clearInputFieldOnce = function ( field ) {
	if( !field.get( 'cleared' ) ){
		JABA.clearInputField( field );
		field.set( 'cleared', true );
	}
}

JABA.addInitialiser( function(){
   	$( JABA.LOGIN_FIELD ).addEvent( 'click', function () {
		JABA.clearInputFieldOnce( this );
	});                 
	$( JABA.PASS_FIELD ).addEvent( 'click', function () {
		JABA.clearInputFieldOnce( this );
	});
	$( JABA.LOGIN_FIELD ).addEvent( 'focus', function () {
		JABA.clearInputFieldOnce( this );
	});
	$( JABA.PASS_FIELD ).addEvent( 'focus', function () {
		JABA.clearInputFieldOnce( this );
	}); 
});