function slide(obj, speed)
{
	var pos = parseInt($(obj).css("left"));
	$(obj).css("left", pos + speed);
	if (speed > 0)
	{
		if (pos <= (600))
		{
			var t = setTimeout("slide('" + obj + "', " + speed +");", 50);
		}
		else
		{
			var speed = r(5, true);
			var pos = (speed > 0) ? -200 : 600;
			$(obj).css("left", pos);
			var t = setTimeout("slide('" + obj + "', " + speed +");", 50);
		}
	}
	else
	{
		if (pos >= -200)
		{
			var t = setTimeout("slide('" + obj + "', " + speed +");", 50);
		}
		else
		{
			var speed = r(5, true);
			var pos = (speed > 0) ? -200 : 600;
			$(obj).css("left", pos);
			var t = setTimeout("slide('" + obj + "', " + speed +");", 50);
		}
	}
}

function r(x, direct)
{
	var n, s;
	if (x == 5) {
		n = 1;
	}
	else {
		n = Math.random();
		n = Math.round(n*x);
	}
	if (direct)
	{
		s = Math.random();
		s = Math.round(s*1);
		n = (s > 0) ? n : -1 * n;
	}
	if (n == 0)
	{
		n = r(x, direct);
	}
	return n;
}

function sliderow()
{
	var speed = -1;
	var n = 5;
	for(var i=1; i<=n; i++)
	{
		var obj = "#pic" + i;
		var pos = parseInt($(obj).css("left"));
		$(obj).css("left", pos + speed);
		if (pos < -220)
		{
			$(obj).css("left", 680);
		}
	}
	setTimeout("sliderow();", 50);
}


$(function(){

	// random position init
	$("#pic1").css("left", -40);
	$("#pic2").css("left", 140);
	$("#pic3").css("left", 320);
	$("#pic4").css("left", 500);
	$("#pic5").css("left", 680);
	sliderow();
	/*
	$("#pic1").css("left", r(500, false));
	$("#pic2").css("left", r(500, false));
	$("#pic3").css("left", r(500, false));
	$("#pic4").css("left", r(500, false));
	$("#pic5").css("left", r(500, false));
	
	var t = new Array();
	setTimeout("slide('#pic1', " + r(5, true) +");", r(1500, false));
	setTimeout("slide('#pic2', " + r(5, true) +");", r(1500, false));
	setTimeout("slide('#pic3', " + r(5, true) +");", r(1500, false));
	setTimeout("slide('#pic4', " + r(5, true) +");", r(1500, false));
	setTimeout("slide('#pic5', " + r(5, true) +");", r(1500, false));
	*/
});