XML –FLV question

[FONT=Verdana][SIZE=2][FONT=Verdana]Hi [/FONT][/SIZE][/FONT]

[FONT=Verdana][SIZE=2][FONT=Verdana]I working on a xml movie gallery .[/FONT][/SIZE][/FONT]

[FONT=Verdana][SIZE=2][FONT=Verdana]I have 3 files on the root :[/FONT][/SIZE][/FONT]
[FONT=Verdana][SIZE=2][FONT=Verdana]data.xml - player.swf - movie.flv[/FONT][/SIZE][/FONT]

[FONT=Verdana][SIZE=2][FONT=Verdana]I can call the flv from the swf file directly with no problem.[/FONT][/SIZE][/FONT]
[FONT=Verdana][SIZE=2][FONT=Verdana]I found a script that calls the flv to be played inside the player.swf :[/FONT][/SIZE][/FONT]

[FONT=Verdana][SIZE=2][FONT=Verdana]

[FONT=Verdana][SIZE=2][FONT=Verdana]<gallery>[/FONT][/SIZE][/FONT]
[FONT=Verdana][SIZE=2][FONT=Verdana]

[LEFT]<album>[/LEFT]
[/FONT][/SIZE][/FONT]

[LEFT][FONT=Verdana][SIZE=2][FONT=Verdana][COLOR=black]<img src="player.swf?videourl=video/flv/movie.flv />[/COLOR][/FONT][/SIZE][/FONT]

[FONT=Verdana][SIZE=2][FONT=Verdana]</album>[/FONT][/SIZE][/FONT]
[LEFT][FONT=Verdana][SIZE=2][FONT=Verdana]</gallery>[/FONT][/SIZE][/FONT][/LEFT]

[/LEFT]

[/FONT][/SIZE][/FONT][LEFT]

[FONT=Verdana][SIZE=2][FONT=Verdana]I do not understand how it works :[/FONT][/SIZE][/FONT]

[FONT=Verdana][SIZE=2][FONT=Verdana]-why we put “?” in the file name [/FONT][/SIZE][/FONT]
[FONT=Verdana][SIZE=2][FONT=Verdana]- and why it is written like that ?[/FONT][/SIZE][/FONT]
[FONT=Verdana][SIZE=2][FONT=Verdana]- what will be the name of the player swf on the folder , I cannot put “?” in the name .[/FONT][/SIZE][/FONT]

[FONT=Verdana][SIZE=2][FONT=Verdana]Please can you explain to me this line .[/FONT][/SIZE][/FONT]

[COLOR=red]src="player.swf?videourl=video/flv/movie.flv[/COLOR]

Thank you .

[/LEFT]