function portfolioView(portfolioID) {
	for (var i=1;i<=8;i++)
		portfolioHide(i);
	var element = document.getElementById("portfolio-" + portfolioID);
	element.style.display = "block";
  var element2 = document.getElementById("pview" + portfolioID);
  if(portfolioID == 1)
    element2.className = "first active";
  else
    element2.className = "active";
	
}
function portfolioHide(portfolioID) {
	//hides a section
	var element = document.getElementById("portfolio-" + portfolioID);
	element.style.display = "none";
  var element2 = document.getElementById("pview" + portfolioID);
  if(portfolioID == 1)
    element2.className = "first";
  else
    element2.className = "";
}