Set Effect

[sssssssssss]

Simple question.
What set effect values would make an image seem slightly transparent, but still have the regular colors and stuff, then what set effect puts it back to normal?
Ill go ahead and post my script, because its blocking and from what I know, it shouldn't be. Besides someone probably knows a better way to do what I'm trying to do anyways.

PHP Code:

function onCreated(){
  setimg("armageddon-bridge11.png");
}
function onPlayerTouchsMe(){
  if (this.touched == 1){
    setcoloreffect(1,1,1,0.44);
    setTimer(2);
  }
  if (this.touched != 1){
    this.touched = 1;
  }
}

function onTimeout(){
  setcoloreffect(0,0,0,1);
  this.touched = 0;
}
//#CLIENTSIDE
function onPlayerTouchsMe(){
  dontblocklocal();
  drawoverplayer();
}