var actCommPos = new Array();
actCommPos[0] = 1;
actCommPos[1] = 1;

var maxCommPos = new Array();
maxCommPos[0] = 3;
maxCommPos[1] = 3;

function nextCommPos(place){
  //var elem = document.getElementById('cb'+place);
  if(actCommPos[place] < maxCommPos[place]){
    setTimeout("slideDiv('cb"+place+"',20, 998);",'10');
    actCommPos[place]++;
  }else{
    var elem = document.getElementById('cb'+place);
    if(elem){
      var actLeft = elem.style.left;
      if(!actLeft) actLeft = '0px';
      actLeft = new Number(actLeft.replace('px',''));
      var newLeft = (actLeft + 3*998)+'px';
      elem.style.left = newLeft;
      setTimeout("slideDiv('cb"+place+"',20, 998);",'10');
      actCommPos[place] = 1;
    }
  }
}

function slideDiv(id, step, toSlide){
  var elem = document.getElementById(id);
  if(elem){
    var actLeft = elem.style.left;
    if(!actLeft) actLeft = '0px';
    actLeft = new Number(actLeft.replace('px',''));
    if(step > toSlide) step = toSlide;
    var newLeft = (actLeft - step)+'px';
    elem.style.left = newLeft;
    
    toSlide -= step;
    if(toSlide){
      setTimeout("slideDiv('"+id+"',"+step+", "+toSlide+");",'10');
    }
  }
}

function startCommSlideShow(){
  setInterval("nextCommPos(0);nextCommPos(1);",'10000');
}