//
var scrollNewsCt=1;
var pauseTime=3*1000;
var timer1;

function hideAllClips() {
	
	for (a=1; a<5; a++){
		var allClips="topNews_"+a;
		var clipNum="clipNum"+a;
		document.getElementById(allClips).style.display="none";
		document.getElementById(clipNum).className="topNewsClip_OFF";
		}
	}
	
function clip_Switch(n) {
	var curClip="topNews_"+n;
	var curClipNum="clipNum"+n;
	hideAllClips();
	document.getElementById(curClip).style.display="block";
	document.getElementById(curClipNum).className="topNewsClip_ON";
	scrollNewsCt=n; 
	}
	
function fwdScroll() {

	stopScroll();
	clip_Switch(scrollNewsCt);
	scrollNewsCt+=1;
	if (scrollNewsCt==5) {
		scrollNewsCt=1;
		}
		timer1=setTimeout("fwdScroll()",pauseTime);
	}
	
function stopScroll() {
	clearTimeout(timer1);
	}

function bwdScroll() {
	stopScroll();
	scrollNewsCt-=1;
	if (scrollNewsCt==0) {
		scrollNewsCt=3;
		}
		clip_Switch(scrollNewsCt);
		timer1=setTimeout("bwdScroll()",pauseTime);
	}


/* window onload functions*/
function addLoadEvent(func){
  var oldonload=window.onload;
  if (typeof window.onload !='function'){
	    window.onload=func;
	  }else{
		    window.onload=function(){
				onload();
				func();
				}
		  }

}

addLoadEvent(fwdScroll);
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