var DIVid=1;
var LastDIVid=1;
var TotalDIV=1;

function ShowDIV(DIVid)
{		
	if (TotalDIV > 0)
	{
		if (LastDIVid != DIVid)
			document.getElementById("Div"+LastDIVid).style.display = "none";
		document.getElementById("Div"+DIVid).style.display = "block";
		LastDIVid = DIVid;
	}
	if (TotalDIV > 1)
	{
		if (DIVid < TotalDIV)
		{
			document.getElementById("DivNext").style.display = "block";
			document.getElementById("DivBack").style.display = "none";
		}
		else
		{
			document.getElementById("DivBack").style.display = "block";
			document.getElementById("DivNext").style.display = "none";
		}
	}
}

function NextDIV(DIVid)
{
	ShowDIV(LastDIVid+1);
}

function FirstDIV(DIVid)
{
	ShowDIV(1);
}