var arr=0;
function setbar(){
  var checkStr=top.c_index.cols;
  var chstr=0
  var chstr1=0
  var digital="100"
  if(arr==0){
	  document.getElementById("arrs").src="images/index_left.gif";
	  top.c_index.cols="*,11,0";
	  arr=1;
  }else{
	  document.getElementById("arrs").src="images/index_right.gif";
	  top.c_index.cols="*,11,280";
	  arr=0;
  }
}