<!--
	function IsValidMail( str )
	{
		var	found = 0,
			nm = 0,
			ps = 0;

		for ( var i = 0; i < str.length - 1; i++ )	{
			if ( str.charAt( i ) == "@" )	{
				found++;
				ps = i;
				break;
 			}
 			if ( str.charAt( i ) == " " && nm )
	 			return ( false );
 			if ( !found && str.charAt( i ) != " " )
 				nm++;
		}
		if ( ( !nm ) || ( !found ) )
			return ( false );
		nm = 0;
		found = 0;

		for ( var i = ++ps; i < str.length - 1; i++ )	{
			if ( str.charAt( i ) == " " )
				return ( false );
			if ( str.charAt( i ) == "@" )
				return ( false );
			if ( str.charAt( i ) == "." )	{
				found++;
				break;
 			}
			nm++;
		}
		if ( nm && found )
			return ( true );
		return ( false );
	}	

	function checkEmail( aField )
	{
		if ( aField.value != "" )
			if ( !IsValidMail( aField.value ) ) {
				alert( "Το Email σας δεν είναι έγκυρο!" );
				aField.focus();
			}
	}
// -->