var timeInterval = 300;
var divPrefix = 'HS_Char';
var highlightColor = 'red';
var originalColor = 'green';

function startHighlightScroll(index)
{
	var character = document.getElementById(divPrefix + index);

	if(character == null)
	{
		return;
	}
	
	character.style.color = highlightColor;
	
	index++;
	
	character = document.getElementById(divPrefix + index);	
	if (character == null)
	{
		setTimeout('revertToOriginalColor()', timeInterval);
		return;
	}	
	
	setTimeout('startHighlightScroll(' + index + ')', timeInterval);
}

function revertToOriginalColor()
{
	var i = 1;
	var character = document.getElementById(divPrefix + i);
	while(character != null)
	{
		character.style.color = originalColor;
		i++;
		var character = document.getElementById(divPrefix + i);
	}
	
	setTimeout('startHighlightScroll(1)', timeInterval);

}