var aIndex = 0, len = 6, total = 12;
function moveNew(Amount)
{
	aIndex += Amount;
	if(aIndex > total - len)
		aIndex = total - len;
	else if(aIndex < 0)
		aIndex = 0;

	for(var a = 0; document.getElementById("slide" + a.toString()); a++)
		document.getElementById("slide" + a.toString()).style.display = (a >= aIndex && a < aIndex + len ? 'block' : 'none');
}