var count=1; 

 function RePic()
 {
  if(count < 10) si="0"+count; else si=count;  
  document.getElementById("topimg").src = "/IMG/TOP/PIC/"+si+".jpg";
  document.getElementById("pic").style.backgroundImage="url(/IMG/TOP/PIC/"+si+"_bg.jpg)";
  if ( count < 15 ) count++; else count = 1;  
  setTimeout("RePic()", 10000);
 }
 setTimeout("RePic()", 10000);