<!--
var lastPortfolioItemID = 0;

function portfolioNext(){
	if(portfolioItems > 1){
		lastPortfolioItemID = portfolioItemID;
		portfolioItemID = portfolioItemID-1;
		if(portfolioItemID <=0){
			portfolioItemID = portfolioItems;
		}
		reloadPortfolioItem(portfolioItemID);
	}
}

function portfolioPrevious(){
	if(portfolioItems > 1){
		lastPortfolioItemID = portfolioItemID;
		portfolioItemID = portfolioItemID+1;
		if(portfolioItemID >portfolioItems){
			portfolioItemID = 1;
		}
		reloadPortfolioItem(portfolioItemID);
	}
}

function reloadPortfolioItem(id){	
	// remove the last
	showPortfolio('portfolio_text',lastPortfolioItemID,0);
	showPortfolio('portfolio_image',lastPortfolioItemID,0);
	// show the new one
	showPortfolio('portfolio_text',portfolioItemID,1);
	showPortfolio('portfolio_image',portfolioItemID,1);
}

function showPortfolio(prefix, id, show){
	if(show == 0){
		// remove visible
		value = "none";
	}
	else if(show == 1){
		// show 
		value = "block";
	}
	// NN4+
	if(document.layers) {
		document.layers[prefix+id].style.display = value;
	}
	//gecko(NN6) + IE 5+
	else if(document.getElementById) 	{
		var obj = document.getElementById(prefix+id);
		obj.style.display = value;
	}
	// IE 4
	else if(document.all) 	{
		document.all[prefix+id].style.display = value;
	}
}

//-->