switch (test) {
	case "a":
		doSomething();
		break;
	default:
		alert("Error");
		break;
}
/**************************************************/
switch(test){case "a":doSomething();break;default:alert("Error");break;}
/**************************************************/
switch ( test )
{
	case "a":
		doSomething(  );
		break;
	default:
		alert( "Error" );
		break;
}