for (c=0;c<21;c++)
{
	new_variable = "la"+c
	new_variable = new image()
	new_variable.image.src = "cl"+c+".jpg"
}

function pic0(a)
{
	var p = "cl"+a+".jpg"
	document.images.slide.src=p

	if (a<21)
	{
		a++
		setTimeout("pic0("+a+")",3000)
		return;
	}
	else
	{
		a=0
		setTimeout("pic0("+a+")",3000)
	}
}