Please see my flash project at http://www.filedropper.com/runner

Just hold down the right_btn to move then you will get to the point where the obstacle are showing up.

I just use one background. I removed the bgB codes. The problem is i don't know the conditionals to use. It's on function oneneter ad addObj (bgA);
I need to put conditionals on addObj(bgA);
When the obstacles appear it never stops and is very fast. I don't know what conditionals to use.

Please help me to get the conditionals sir!