Checking for Stage Presence

programming flash
1

Hello,

Is there a quick and dirty test expression I can use to check if an object is present on stage?

example would be:

addChild(myTextField);
//already defined and added text field

function loadOtherFields(event:MouseEvent):void{
  if (myTextFieldIsOnStage=true){
     removeChild(myTextField);
  }
//rest of function goes here
}

thanks in advance for any insight.

varPBR:Tasty