function IsEmail( f, n ) {
	if ( /^[a-z\d][a-z\d\-\._]*@([a-z\d][a-z\d\-]*)(\.[a-z\d][a-z\d\-]*)*$/i.test( f.value ) == false ) {
		alert( n ); f.focus( ); f.select( ); return false;
	}
	return true;
}

function IsPhone( f, n ) {
	if ( /^(\+\s*)?(\d+|\(\s*\d+\s*\))([ \-](\d+|\(\s*\d+\s*\))){0,3}$/i.test( f.value ) == false || /^.{6,32}$/i.test( f.value ) == false ) {
		alert( n ); f.focus( ); f.select( ); return false;
	}
	return true;
}

function IsFilled( f, n ) {
	if ( /\S/i.test( f.value ) == false ) {
		alert( n ); f.focus( ); f.select( ); return false;
	}
	return true;
}

function IsSelected( f, n ) {
	if ( f.options.length == 0 || f.selectedIndex <= 0 ) {
		alert( n ); f.focus( ); return false;
	}
	return true;
}

function IsChecked( f, n ) {
	if ( f.length ) {
		for ( var i = 0; i < f.length; i++ ) {
			if ( f[ i ].checked == true ) {
				return true;
			}
		}
		alert( n ); f[ 0 ].focus( ); return false;
	}
	else if ( f.checked == false ) {
		alert( n ); f.focus( ); return false;
	}
	return true;
}