}
The code inside the brackets is the parameter that defines what happens if the condition for the "if" statement is met. The universal variable setProperty assigns a property to an object, and this is where our named instance of our movie clip enters in; inside the parentheses for the parameter we define first the object whose properties are being affected (Loader), then the property to affect (_xscale, or how much the width is scaled up or down on the shape/object), and by what value to affect it (the loaded variable). So what this says, overall, is "If the percent loaded is not 100, then set the width of the symbol named Loader to the same percent as the value of loaded".
else{
gotoAndStop(3) ;
}
This is the "else" condition of the statement, that covers all other existing conditions not met by "loaded != 100". It basically says, "In all other instances, go to frame three of the current movie clip and stop playing", because the movie has loaded and therefore we no longer need to continue scaling our loader bar.
