function showSimple(id) {
	var element = document.getElementById(id);
	element.style.display = 'block';
}


function hideSimple(id) {
	var element = document.getElementById(id);
	element.style.display = 'none';
}


/* portofolio */

var portofolioNow = 1;
function showPortofolio(numID){
	var prefix = "portofolio";
	var realID = prefix +"-"+ numID;
	var nowID = prefix +"-"+ portofolioNow;
	if(numID != portofolioNow){
		showSimple(realID);
		hideSimple(nowID);
		portofolioNow = numID;
		//alert(portofolioNow);
	}
}