time based quirk

Hi,
In a time base function if load a MC it fails to be clickable (but the MC appears). If I load it outside the time base function it works fine and is clickable.

I don't get this ? I spent ages trying to find out why it fails and it comes down to a time based quirk it seems. is there anything I can do ?


var aval:Array= new Array();
aval.push("98img1.jpg");
aval.push("50img2.jpg");

function createShifters():Void{
this.attachMovie("move1","mc4",this.getNextHighest Depth());
mc4._x=300;
mc4._y=200;
}

function main():Void
{
if (aval.length>0)
{
// createShifters(); failed
clearInterval(timeINum);
createShifters(); //fails to be clickable but loads the image
}
}

var timeINum:Number=setInterval(main,1000);
createShifters(); //works outside of the time limit


mc4.onPress = function () :Void
{
...
}