var position = 0;
var frame = 1;
var frameSize = 210;

function slideBox(imageCount, direction){

	
	if(imageCount > 1){
	
	//moves slider forward
		if(direction == "forward"){
		
			if(frame < imageCount){
				
				for (var i=0; i<frameSize; i++){ 
					setTimeout("mover('" + (position + (i * -1)) + "')", 2 * i);
				 
				 }
				position = position + -frameSize;
				frame++;
				
			}else{
			
				for (var i=0; i<frameSize; i++){ 
					
					setTimeout("mover('" + (position + ((i * (1/frameSize)) * (position * -1))) + "')", 2 * i);
				 
				 }
				position = 0;
				frame = 1;
				
			}
			
			
	// moves slider backward	
		} else if(direction == "backward"){
		
			if(frame == 1){
			
			
			
			for (var i=0; i<frameSize; i++){ 
					setTimeout("mover('" + ((imageCount - 1) * i) * -1 + "')", 2 * i);
				 
				 }
			position = ((imageCount - 1) * frameSize) * -1;	 
			frame = imageCount;
			
			} else {
			
			for (var i=0; i<frameSize; i++){ 
					setTimeout("mover('" + (position + i) + "')", 2 * i);
				 
				 }
				 
			position = position + frameSize;
			frame = frame - 1;
			
			}
			
		}
	
	}

}

function mover(nextPos){

	document.getElementById('newsScoller').style.left = nextPos + "px";

}