Countdown item giver with percentage of time left to give

integer time_elapsed;
float time = 5.0;
key toucher;

default
{
¶touch_end(integer num)
{
 toucher = llDetectedKey(0);
 time_elapsed = 0;
 llResetTime();
 llSetTimerEvent(1.0);

}

timer()
{
  time_elapsed = llRound(llGetTime());
  string percentage = (string)(time_elapsed/time*100);
  integer idx = llSubStringIndex(percentage, ".");
  llSetText(llGetSubString(percentage,0,idx-1)+"%",<1.0,0.0,0.0>,1.0);


  if(time_elapsed == 5.0)
 {

  llGiveInventory(toucher, llGetInventoryName(INVENTORY_OBJECT, 0) );
   llSetTimerEvent(0.0);

 }

}
}