myHandle = 0;
mySpeed = 0;

function SCRL(){
	window.parent.FRAME.scrollBy(0, mySpeed);
}

function START(myParam){
   mySpeed = myParam;
   if (myHandle == 0){
      myHandle = setInterval("SCRL()",100);
   }
}

function STOP(){
mySpeed = 0;
   if (myHandle != 0){
      clearInterval(myHandle);
      myHandle = 0;
   }
}