int platform_request(String URI)
===============================
launch browser with requsted URL - 'http://wap.motofan.ru'
When a MIDlet suite requests a URL, the browser will come to the foreground and
connect to that URL. The user will then have access to the browser and control over any
downloads or network connections. The initiating MIDlet suite will continue running in the
background, if it cannot (upon exiting the requesting MIDlet suite) the handset will bring
the browser to the foreground with the specified URL.
If the URL specified refers to a MIDlet suite, JAD, or JAR, the request will be treated as a
request to install the named package. The user will be able to control the download and
installation process, including cancellation. Please note normal Java installation process
should be used.
call phonenumber - 'tel:555111222'
If the requested URL takes the form tel: <number>, the handset will use this request
to initiate a voice call as specified in RFC2806. If the MIDlet will be exited to handle the
URL request, the handset will only handle the last request made. If the MIDlet suite
continues to run in the background when the URL request is being made, all other
requests will be handled in a timely manner.

String get_app_property(String key)
=======================
Provides a MIDlet with a mechanism to retrieve named properties from the application management software. The properties are retrieved from the combination of the application descriptor file and the manifest. For trusted applications the values in the manifest MUST NOT be overridden by those in the application descriptor. If they differ, the MIDlet will not be installed on the device. For untrusted applications, if an attribute in the descriptor has the same name as an attribute in the manifest the value from the descriptor is used and the value from the manifest is ignored.