function startSlide(){
  if(document.getElementById("marquee")){
    slide();
  }else{
    setTimeout("startSlide()",1000);
  }
}

function slide(){
  /*increase timeX to slow speed, decrease it to go faster*/
  var timeX=12;
  var newsTick=document.getElementById("info_box");
  var myMar=document.getElementById("marquee");
  var newsTickLeft=newsTick.offsetLeft;
  var myMarLeft=myMar.offsetLeft;
  var myMarWidth=myMar.offsetWidth;
  var timer=setTimeout("slide()",timeX);
  
  if (myMarLeft > -myMarWidth){
    myMar.style.left=myMarLeft-1+"px";
  }else{
    myMar.style.left=newsTick.offsetWidth+"px";
  }
}
window.onload = startSlide();