public function GetPreview
Prototype:
public function GetPreview(string output, string format=PREVIEW_PNG, string size="320x240", number how_much=1, number from_where=-1)
Parameters
format
(string) has a default value of PREVIEW_PNG
size
(string) has a default value of "320x240"
how_much
(number) has a default value of 1
from_where
(number) has a default value of -1
Description:
TODO: Document this
Return value:
// TO DO