var first =2;
var second = 3;
var third = 4;

document.getElementById("firstproduct").innerHTML = document.getElementById("sdiv" + first).innerHTML;
document.getElementById("secondproduct").innerHTML = document.getElementById("sdiv" + second).innerHTML;
document.getElementById("thirdproduct").innerHTML = document.getElementById("sdiv" + third).innerHTML;

function scrollDivUp()
{
	document.getElementById("downdiv").style.display = "";
	first = second;
	second = second + 1;
	third = second + 1;
	
	document.getElementById("firstproduct").innerHTML = document.getElementById("sdiv" + first).innerHTML;
	document.getElementById("secondproduct").innerHTML = document.getElementById("sdiv" + second).innerHTML;
	document.getElementById("thirdproduct").innerHTML = document.getElementById("sdiv" + third).innerHTML;
	
	if(third >= scrolllen)
		document.getElementById("updiv").style.display = "none";
	
}

function scrollDivDown()
{

	third = second;
	second = first;
	first = first - 1;
	
	document.getElementById("updiv").style.display = "";
	
	document.getElementById("firstproduct").innerHTML = document.getElementById("sdiv" + first).innerHTML;
	document.getElementById("secondproduct").innerHTML = document.getElementById("sdiv" + second).innerHTML;
	document.getElementById("thirdproduct").innerHTML = document.getElementById("sdiv" + third).innerHTML;

	if(first <= 1)
		document.getElementById("downdiv").style.display = "none";
	
}