var showsDiv = "tv_g";
var pixelShift = 6;
var displace = 10;
var t_out = 5;

function MoveUp(_i) 
{
	var divStyles = document.getElementById(showsDiv).style;
	var divTop = parseInt(divStyles.top);
	if (divTop < -25) 
	{
	    divStyles.top = (divTop + pixelShift) + "px";
	}
	if (_i < displace && divTop < 0) 
	{
		_i += 1;
		_j = _i;
		the_timeout = setTimeout("MoveUp(_j);", t_out);
	} 
	else 
	{
		clearTimeout(the_timeout);
		_i = 0;
	}
}

function MoveDown(_i) {
	var divStyles = document.getElementById(showsDiv).style;
	var divHeight = document.getElementById(showsDiv).offsetHeight;
	var divTop = parseInt(divStyles.top);
	if (divTop > (-divHeight + 62)) 
	{
	    divStyles.top = (divTop - pixelShift) + "px";
	}
	if (_i < displace) 
	{
		_i += 1;
		_j = _i;
		the_timeout = setTimeout("MoveDown(_j);", t_out);
	} 
	else 
	{
		clearTimeout(the_timeout);
		_i = 0;
	}
}

function tvScroll(cmd) {
	var divStyles = document.getElementById(showsDiv).style;
	var divTop = parseInt(divStyles.top);
	if (cmd == 'up' && divTop != -5) 
	{
	    MoveUp(0);
	} 
	else 
	{
	    if(cmd == 'up')
	    {
	        divStyles.top = 0 + "px";
	    }
	}
	if (cmd == 'down') 
	{
	    MoveDown(0);
	} 
	else 
	{
	}
}